Home / 15,695.40-23,517.90-8,290.20

Finding the Fourth Proportional to 15,695.40, 23,517.90 and 8,290.20

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Solution

The fourth proportional to 15,695.40, 23,517.90 and 8,290.20 is: 12,421.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,695.40 : 23,517.90 = 8,290.20 : x
  2. Step 2: Convert to fraction form
    15,695.40/23,517.90 = 8,290.20/x
  3. Step 3: Cross multiply
    15,695.40x = 23,517.90 × 8,290.20
  4. Step 4: Simplify right side
    15,695.40x = 194,968,094.58
  5. Step 5: Solve for x
    x = 194,968,094.58/15,695.40
  6. Step 6: Final answer
    x = 12,421.99

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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.