Home / 28,148.40-38,919-24,649.20

Finding the Fourth Proportional to 28,148.40, 38,919 and 24,649.20

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Solution

The fourth proportional to 28,148.40, 38,919 and 24,649.20 is: 34,080.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,148.40 : 38,919 = 24,649.20 : x
  2. Step 2: Convert to fraction form
    28,148.40/38,919 = 24,649.20/x
  3. Step 3: Cross multiply
    28,148.40x = 38,919 × 24,649.20
  4. Step 4: Simplify right side
    28,148.40x = 959,322,214.80
  5. Step 5: Solve for x
    x = 959,322,214.80/28,148.40
  6. Step 6: Final answer
    x = 34,080.88

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.