Home / 31,389.83-47,084.64-19,711.25

Finding the Fourth Proportional to 31,389.83, 47,084.64 and 19,711.25

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Solution

The fourth proportional to 31,389.83, 47,084.64 and 19,711.25 is: 29,566.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,389.83 : 47,084.64 = 19,711.25 : x
  2. Step 2: Convert to fraction form
    31,389.83/47,084.64 = 19,711.25/x
  3. Step 3: Cross multiply
    31,389.83x = 47,084.64 × 19,711.25
  4. Step 4: Simplify right side
    31,389.83x = 928,097,110.20
  5. Step 5: Solve for x
    x = 928,097,110.20/31,389.83
  6. Step 6: Final answer
    x = 29,566.81

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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.