Home / 21,239.38-31,862.91-8,752.45

Finding the Fourth Proportional to 21,239.38, 31,862.91 and 8,752.45

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Solution

The fourth proportional to 21,239.38, 31,862.91 and 8,752.45 is: 13,130.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,239.38 : 31,862.91 = 8,752.45 : x
  2. Step 2: Convert to fraction form
    21,239.38/31,862.91 = 8,752.45/x
  3. Step 3: Cross multiply
    21,239.38x = 31,862.91 × 8,752.45
  4. Step 4: Simplify right side
    21,239.38x = 278,878,526.63
  5. Step 5: Solve for x
    x = 278,878,526.63/21,239.38
  6. Step 6: Final answer
    x = 13,130.26

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.