Home / 27,985.12-38,618.08-15,407.52

Finding the Fourth Proportional to 27,985.12, 38,618.08 and 15,407.52

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Solution

The fourth proportional to 27,985.12, 38,618.08 and 15,407.52 is: 21,261.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,985.12 : 38,618.08 = 15,407.52 : x
  2. Step 2: Convert to fraction form
    27,985.12/38,618.08 = 15,407.52/x
  3. Step 3: Cross multiply
    27,985.12x = 38,618.08 × 15,407.52
  4. Step 4: Simplify right side
    27,985.12x = 595,008,839.96
  5. Step 5: Solve for x
    x = 595,008,839.96/27,985.12
  6. Step 6: Final answer
    x = 21,261.61

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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.