Home / 39,711.47-54,802.58-21,807.83

Finding the Fourth Proportional to 39,711.47, 54,802.58 and 21,807.83

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Solution

The fourth proportional to 39,711.47, 54,802.58 and 21,807.83 is: 30,095.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,711.47 : 54,802.58 = 21,807.83 : x
  2. Step 2: Convert to fraction form
    39,711.47/54,802.58 = 21,807.83/x
  3. Step 3: Cross multiply
    39,711.47x = 54,802.58 × 21,807.83
  4. Step 4: Simplify right side
    39,711.47x = 1,195,125,376.17
  5. Step 5: Solve for x
    x = 1,195,125,376.17/39,711.47
  6. Step 6: Final answer
    x = 30,095.22

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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.