Home / 21,430.17-32,147.28-8,282.25

Finding the Fourth Proportional to 21,430.17, 32,147.28 and 8,282.25

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Solution

The fourth proportional to 21,430.17, 32,147.28 and 8,282.25 is: 12,424.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,430.17 : 32,147.28 = 8,282.25 : x
  2. Step 2: Convert to fraction form
    21,430.17/32,147.28 = 8,282.25/x
  3. Step 3: Cross multiply
    21,430.17x = 32,147.28 × 8,282.25
  4. Step 4: Simplify right side
    21,430.17x = 266,251,809.78
  5. Step 5: Solve for x
    x = 266,251,809.78/21,430.17
  6. Step 6: Final answer
    x = 12,424.16

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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.