Home / 31,561.04-43,541-22,135.76

Finding the Fourth Proportional to 31,561.04, 43,541 and 22,135.76

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Solution

The fourth proportional to 31,561.04, 43,541 and 22,135.76 is: 30,538.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,561.04 : 43,541 = 22,135.76 : x
  2. Step 2: Convert to fraction form
    31,561.04/43,541 = 22,135.76/x
  3. Step 3: Cross multiply
    31,561.04x = 43,541 × 22,135.76
  4. Step 4: Simplify right side
    31,561.04x = 963,813,126.16
  5. Step 5: Solve for x
    x = 963,813,126.16/31,561.04
  6. Step 6: Final answer
    x = 30,538.07

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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.