Home / 31,545.50-43,533.42-20,386.94

Finding the Fourth Proportional to 31,545.50, 43,533.42 and 20,386.94

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Solution

The fourth proportional to 31,545.50, 43,533.42 and 20,386.94 is: 28,134.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,545.50 : 43,533.42 = 20,386.94 : x
  2. Step 2: Convert to fraction form
    31,545.50/43,533.42 = 20,386.94/x
  3. Step 3: Cross multiply
    31,545.50x = 43,533.42 × 20,386.94
  4. Step 4: Simplify right side
    31,545.50x = 887,513,221.53
  5. Step 5: Solve for x
    x = 887,513,221.53/31,545.50
  6. Step 6: Final answer
    x = 28,134.38

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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.