Home / 39,490.96-54,499-21,587.16

Finding the Fourth Proportional to 39,490.96, 54,499 and 21,587.16

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Solution

The fourth proportional to 39,490.96, 54,499 and 21,587.16 is: 29,791.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,490.96 : 54,499 = 21,587.16 : x
  2. Step 2: Convert to fraction form
    39,490.96/54,499 = 21,587.16/x
  3. Step 3: Cross multiply
    39,490.96x = 54,499 × 21,587.16
  4. Step 4: Simplify right side
    39,490.96x = 1,176,478,632.84
  5. Step 5: Solve for x
    x = 1,176,478,632.84/39,490.96
  6. Step 6: Final answer
    x = 29,791.09

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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.