Home / 21,314.52-29,432.61-13,370.40

Finding the Fourth Proportional to 21,314.52, 29,432.61 and 13,370.40

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Solution

The fourth proportional to 21,314.52, 29,432.61 and 13,370.40 is: 18,462.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,314.52 : 29,432.61 = 13,370.40 : x
  2. Step 2: Convert to fraction form
    21,314.52/29,432.61 = 13,370.40/x
  3. Step 3: Cross multiply
    21,314.52x = 29,432.61 × 13,370.40
  4. Step 4: Simplify right side
    21,314.52x = 393,525,768.74
  5. Step 5: Solve for x
    x = 393,525,768.74/21,314.52
  6. Step 6: Final answer
    x = 18,462.80

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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.