Home / 39,158.08-54,029.28-22,390.72

Finding the Fourth Proportional to 39,158.08, 54,029.28 and 22,390.72

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Solution

The fourth proportional to 39,158.08, 54,029.28 and 22,390.72 is: 30,894.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,158.08 : 54,029.28 = 22,390.72 : x
  2. Step 2: Convert to fraction form
    39,158.08/54,029.28 = 22,390.72/x
  3. Step 3: Cross multiply
    39,158.08x = 54,029.28 × 22,390.72
  4. Step 4: Simplify right side
    39,158.08x = 1,209,754,480.28
  5. Step 5: Solve for x
    x = 1,209,754,480.28/39,158.08
  6. Step 6: Final answer
    x = 30,894.12

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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.