Home / 25,749.61-38,649.39-12,432.00

Finding the Fourth Proportional to 25,749.61, 38,649.39 and 12,432.00

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Solution

The fourth proportional to 25,749.61, 38,649.39 and 12,432.00 is: 18,660.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,749.61 : 38,649.39 = 12,432.00 : x
  2. Step 2: Convert to fraction form
    25,749.61/38,649.39 = 12,432.00/x
  3. Step 3: Cross multiply
    25,749.61x = 38,649.39 × 12,432.00
  4. Step 4: Simplify right side
    25,749.61x = 480,489,119.86
  5. Step 5: Solve for x
    x = 480,489,119.86/25,749.61
  6. Step 6: Final answer
    x = 18,660.05

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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.