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Finding the Fourth Proportional to 13,896,834.88, 20,842,715.52 and 5,807,646.40

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Solution

The fourth proportional to 13,896,834.88, 20,842,715.52 and 5,807,646.40 is: 8,710,409.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,896,834.88 : 20,842,715.52 = 5,807,646.40 : x
  2. Step 2: Convert to fraction form
    13,896,834.88/20,842,715.52 = 5,807,646.40/x
  3. Step 3: Cross multiply
    13,896,834.88x = 20,842,715.52 × 5,807,646.40
  4. Step 4: Simplify right side
    13,896,834.88x = 121,047,121,755,952.14
  5. Step 5: Solve for x
    x = 121,047,121,755,952.14/13,896,834.88
  6. Step 6: Final answer
    x = 8,710,409.44

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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.