Home / 21,535.20-29,717.60-12,583.52

Finding the Fourth Proportional to 21,535.20, 29,717.60 and 12,583.52

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Solution

The fourth proportional to 21,535.20, 29,717.60 and 12,583.52 is: 17,364.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,535.20 : 29,717.60 = 12,583.52 : x
  2. Step 2: Convert to fraction form
    21,535.20/29,717.60 = 12,583.52/x
  3. Step 3: Cross multiply
    21,535.20x = 29,717.60 × 12,583.52
  4. Step 4: Simplify right side
    21,535.20x = 373,952,013.95
  5. Step 5: Solve for x
    x = 373,952,013.95/21,535.20
  6. Step 6: Final answer
    x = 17,364.69

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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.