Home / 25,730.66-35,508.98-15,120.88

Finding the Fourth Proportional to 25,730.66, 35,508.98 and 15,120.88

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Solution

The fourth proportional to 25,730.66, 35,508.98 and 15,120.88 is: 20,867.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,730.66 : 35,508.98 = 15,120.88 : x
  2. Step 2: Convert to fraction form
    25,730.66/35,508.98 = 15,120.88/x
  3. Step 3: Cross multiply
    25,730.66x = 35,508.98 × 15,120.88
  4. Step 4: Simplify right side
    25,730.66x = 536,927,025.50
  5. Step 5: Solve for x
    x = 536,927,025.50/25,730.66
  6. Step 6: Final answer
    x = 20,867.21

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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.