Home / 15,952.30-22,021.95-9,987.28

Finding the Fourth Proportional to 15,952.30, 22,021.95 and 9,987.28

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Solution

The fourth proportional to 15,952.30, 22,021.95 and 9,987.28 is: 13,787.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,952.30 : 22,021.95 = 9,987.28 : x
  2. Step 2: Convert to fraction form
    15,952.30/22,021.95 = 9,987.28/x
  3. Step 3: Cross multiply
    15,952.30x = 22,021.95 × 9,987.28
  4. Step 4: Simplify right side
    15,952.30x = 219,939,380.80
  5. Step 5: Solve for x
    x = 219,939,380.80/15,952.30
  6. Step 6: Final answer
    x = 13,787.31

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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.