Home / 38,500.32-53,129.87-21,504.80

Finding the Fourth Proportional to 38,500.32, 53,129.87 and 21,504.80

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Solution

The fourth proportional to 38,500.32, 53,129.87 and 21,504.80 is: 29,676.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,500.32 : 53,129.87 = 21,504.80 : x
  2. Step 2: Convert to fraction form
    38,500.32/53,129.87 = 21,504.80/x
  3. Step 3: Cross multiply
    38,500.32x = 53,129.87 × 21,504.80
  4. Step 4: Simplify right side
    38,500.32x = 1,142,547,095.55
  5. Step 5: Solve for x
    x = 1,142,547,095.55/38,500.32
  6. Step 6: Final answer
    x = 29,676.30

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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.