Home / 15,777.60-23,666.40-13,432.20

Finding the Fourth Proportional to 15,777.60, 23,666.40 and 13,432.20

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Solution

The fourth proportional to 15,777.60, 23,666.40 and 13,432.20 is: 20,148.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,777.60 : 23,666.40 = 13,432.20 : x
  2. Step 2: Convert to fraction form
    15,777.60/23,666.40 = 13,432.20/x
  3. Step 3: Cross multiply
    15,777.60x = 23,666.40 × 13,432.20
  4. Step 4: Simplify right side
    15,777.60x = 317,891,818.08
  5. Step 5: Solve for x
    x = 317,891,818.08/15,777.60
  6. Step 6: Final answer
    x = 20,148.30

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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.