Home / 21,138,678.18-31,700,240.28-7,302,116.16

Finding the Fourth Proportional to 21,138,678.18, 31,700,240.28 and 7,302,116.16

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Solution

The fourth proportional to 21,138,678.18, 31,700,240.28 and 7,302,116.16 is: 10,950,487.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,138,678.18 : 31,700,240.28 = 7,302,116.16 : x
  2. Step 2: Convert to fraction form
    21,138,678.18/31,700,240.28 = 7,302,116.16/x
  3. Step 3: Cross multiply
    21,138,678.18x = 31,700,240.28 × 7,302,116.16
  4. Step 4: Simplify right side
    21,138,678.18x = 231,478,836,824,470.94
  5. Step 5: Solve for x
    x = 231,478,836,824,470.94/21,138,678.18
  6. Step 6: Final answer
    x = 10,950,487.77

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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.