Home / 38,455.20-53,064.96-21,457.92

Finding the Fourth Proportional to 38,455.20, 53,064.96 and 21,457.92

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Solution

The fourth proportional to 38,455.20, 53,064.96 and 21,457.92 is: 29,610.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,455.20 : 53,064.96 = 21,457.92 : x
  2. Step 2: Convert to fraction form
    38,455.20/53,064.96 = 21,457.92/x
  3. Step 3: Cross multiply
    38,455.20x = 53,064.96 × 21,457.92
  4. Step 4: Simplify right side
    38,455.20x = 1,138,663,666.48
  5. Step 5: Solve for x
    x = 1,138,663,666.48/38,455.20
  6. Step 6: Final answer
    x = 29,610.14

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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.