Home / 15,422.91-21,261.33-10,108.50

Finding the Fourth Proportional to 15,422.91, 21,261.33 and 10,108.50

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Solution

The fourth proportional to 15,422.91, 21,261.33 and 10,108.50 is: 13,935.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,422.91 : 21,261.33 = 10,108.50 : x
  2. Step 2: Convert to fraction form
    15,422.91/21,261.33 = 10,108.50/x
  3. Step 3: Cross multiply
    15,422.91x = 21,261.33 × 10,108.50
  4. Step 4: Simplify right side
    15,422.91x = 214,920,154.31
  5. Step 5: Solve for x
    x = 214,920,154.31/15,422.91
  6. Step 6: Final answer
    x = 13,935.12

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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.