Home / 21,423.60-32,077.80-15,548.40

Finding the Fourth Proportional to 21,423.60, 32,077.80 and 15,548.40

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Solution

The fourth proportional to 21,423.60, 32,077.80 and 15,548.40 is: 23,280.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,423.60 : 32,077.80 = 15,548.40 : x
  2. Step 2: Convert to fraction form
    21,423.60/32,077.80 = 15,548.40/x
  3. Step 3: Cross multiply
    21,423.60x = 32,077.80 × 15,548.40
  4. Step 4: Simplify right side
    21,423.60x = 498,758,465.52
  5. Step 5: Solve for x
    x = 498,758,465.52/21,423.60
  6. Step 6: Final answer
    x = 23,280.80

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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.