Home / 15,655.40-23,500.38-12,389.48

Finding the Fourth Proportional to 15,655.40, 23,500.38 and 12,389.48

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Solution

The fourth proportional to 15,655.40, 23,500.38 and 12,389.48 is: 18,597.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,655.40 : 23,500.38 = 12,389.48 : x
  2. Step 2: Convert to fraction form
    15,655.40/23,500.38 = 12,389.48/x
  3. Step 3: Cross multiply
    15,655.40x = 23,500.38 × 12,389.48
  4. Step 4: Simplify right side
    15,655.40x = 291,157,488.00
  5. Step 5: Solve for x
    x = 291,157,488.00/15,655.40
  6. Step 6: Final answer
    x = 18,597.90

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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.