Home / 21,989,436.12-30,344,398.20-12,199,776.12

Finding the Fourth Proportional to 21,989,436.12, 30,344,398.20 and 12,199,776.12

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Solution

The fourth proportional to 21,989,436.12, 30,344,398.20 and 12,199,776.12 is: 16,835,123.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,989,436.12 : 30,344,398.20 = 12,199,776.12 : x
  2. Step 2: Convert to fraction form
    21,989,436.12/30,344,398.20 = 12,199,776.12/x
  3. Step 3: Cross multiply
    21,989,436.12x = 30,344,398.20 × 12,199,776.12
  4. Step 4: Simplify right side
    21,989,436.12x = 370,194,864,536,130.94
  5. Step 5: Solve for x
    x = 370,194,864,536,130.94/21,989,436.12
  6. Step 6: Final answer
    x = 16,835,123.13

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.