Home / 39,605.90-54,656.16-21,701.60

Finding the Fourth Proportional to 39,605.90, 54,656.16 and 21,701.60

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Solution

The fourth proportional to 39,605.90, 54,656.16 and 21,701.60 is: 29,948.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,605.90 : 54,656.16 = 21,701.60 : x
  2. Step 2: Convert to fraction form
    39,605.90/54,656.16 = 21,701.60/x
  3. Step 3: Cross multiply
    39,605.90x = 54,656.16 × 21,701.60
  4. Step 4: Simplify right side
    39,605.90x = 1,186,126,121.86
  5. Step 5: Solve for x
    x = 1,186,126,121.86/39,605.90
  6. Step 6: Final answer
    x = 29,948.22

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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.