Home / 15,807,780.18-21,802,700.70-13,606,389.72

Finding the Fourth Proportional to 15,807,780.18, 21,802,700.70 and 13,606,389.72

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Solution

The fourth proportional to 15,807,780.18, 21,802,700.70 and 13,606,389.72 is: 18,766,457.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,807,780.18 : 21,802,700.70 = 13,606,389.72 : x
  2. Step 2: Convert to fraction form
    15,807,780.18/21,802,700.70 = 13,606,389.72/x
  3. Step 3: Cross multiply
    15,807,780.18x = 21,802,700.70 × 13,606,389.72
  4. Step 4: Simplify right side
    15,807,780.18x = 296,656,042,672,716.81
  5. Step 5: Solve for x
    x = 296,656,042,672,716.81/15,807,780.18
  6. Step 6: Final answer
    x = 18,766,457.99

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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.