Home / 28,258.40-42,387.60-8,534.90

Finding the Fourth Proportional to 28,258.40, 42,387.60 and 8,534.90

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Solution

The fourth proportional to 28,258.40, 42,387.60 and 8,534.90 is: 12,802.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,258.40 : 42,387.60 = 8,534.90 : x
  2. Step 2: Convert to fraction form
    28,258.40/42,387.60 = 8,534.90/x
  3. Step 3: Cross multiply
    28,258.40x = 42,387.60 × 8,534.90
  4. Step 4: Simplify right side
    28,258.40x = 361,773,927.24
  5. Step 5: Solve for x
    x = 361,773,927.24/28,258.40
  6. Step 6: Final answer
    x = 12,802.35

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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.