Home / 39,658.13-54,728.85-21,752.81

Finding the Fourth Proportional to 39,658.13, 54,728.85 and 21,752.81

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Solution

The fourth proportional to 39,658.13, 54,728.85 and 21,752.81 is: 30,019.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,658.13 : 54,728.85 = 21,752.81 : x
  2. Step 2: Convert to fraction form
    39,658.13/54,728.85 = 21,752.81/x
  3. Step 3: Cross multiply
    39,658.13x = 54,728.85 × 21,752.81
  4. Step 4: Simplify right side
    39,658.13x = 1,190,506,275.57
  5. Step 5: Solve for x
    x = 1,190,506,275.57/39,658.13
  6. Step 6: Final answer
    x = 30,019.22

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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.