Home / 21,124,702,934.10-31,687,054,401.15-18,920,710,818.90

Finding the Fourth Proportional to 21,124,702,934.10, 31,687,054,401.15 and 18,920,710,818.90

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Solution

The fourth proportional to 21,124,702,934.10, 31,687,054,401.15 and 18,920,710,818.90 is: 28,381,066,228.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,124,702,934.10 : 31,687,054,401.15 = 18,920,710,818.90 : x
  2. Step 2: Convert to fraction form
    21,124,702,934.10/31,687,054,401.15 = 18,920,710,818.90/x
  3. Step 3: Cross multiply
    21,124,702,934.10x = 31,687,054,401.15 × 18,920,710,818.90
  4. Step 4: Simplify right side
    21,124,702,934.10x = 599,541,593,026,911,797,248
  5. Step 5: Solve for x
    x = 599,541,593,026,911,797,248/21,124,702,934.10
  6. Step 6: Final answer
    x = 28,381,066,228.35

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.