Home / 38,645.16-53,325.72-21,650.28

Finding the Fourth Proportional to 38,645.16, 53,325.72 and 21,650.28

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Solution

The fourth proportional to 38,645.16, 53,325.72 and 21,650.28 is: 29,874.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,645.16 : 53,325.72 = 21,650.28 : x
  2. Step 2: Convert to fraction form
    38,645.16/53,325.72 = 21,650.28/x
  3. Step 3: Cross multiply
    38,645.16x = 53,325.72 × 21,650.28
  4. Step 4: Simplify right side
    38,645.16x = 1,154,516,769.20
  5. Step 5: Solve for x
    x = 1,154,516,769.20/38,645.16
  6. Step 6: Final answer
    x = 29,874.81

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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.