Home / 21,438.60-32,159.16-8,291.04

Finding the Fourth Proportional to 21,438.60, 32,159.16 and 8,291.04

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Solution

The fourth proportional to 21,438.60, 32,159.16 and 8,291.04 is: 12,437.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,438.60 : 32,159.16 = 8,291.04 : x
  2. Step 2: Convert to fraction form
    21,438.60/32,159.16 = 8,291.04/x
  3. Step 3: Cross multiply
    21,438.60x = 32,159.16 × 8,291.04
  4. Step 4: Simplify right side
    21,438.60x = 266,632,881.93
  5. Step 5: Solve for x
    x = 266,632,881.93/21,438.60
  6. Step 6: Final answer
    x = 12,437.05

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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.