Home / 15,760,401.72-21,749,895.20-9,144,490.59

Finding the Fourth Proportional to 15,760,401.72, 21,749,895.20 and 9,144,490.59

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Solution

The fourth proportional to 15,760,401.72, 21,749,895.20 and 9,144,490.59 is: 12,619,710.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,760,401.72 : 21,749,895.20 = 9,144,490.59 : x
  2. Step 2: Convert to fraction form
    15,760,401.72/21,749,895.20 = 9,144,490.59/x
  3. Step 3: Cross multiply
    15,760,401.72x = 21,749,895.20 × 9,144,490.59
  4. Step 4: Simplify right side
    15,760,401.72x = 198,891,711,989,886.16
  5. Step 5: Solve for x
    x = 198,891,711,989,886.16/15,760,401.72
  6. Step 6: Final answer
    x = 12,619,710.81

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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.