Home / 39,215.34-54,117-21,310.02

Finding the Fourth Proportional to 39,215.34, 54,117 and 21,310.02

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Solution

The fourth proportional to 39,215.34, 54,117 and 21,310.02 is: 29,407.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,215.34 : 54,117 = 21,310.02 : x
  2. Step 2: Convert to fraction form
    39,215.34/54,117 = 21,310.02/x
  3. Step 3: Cross multiply
    39,215.34x = 54,117 × 21,310.02
  4. Step 4: Simplify right side
    39,215.34x = 1,153,234,352.34
  5. Step 5: Solve for x
    x = 1,153,234,352.34/39,215.34
  6. Step 6: Final answer
    x = 29,407.74

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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.