Home / 10,127.40-15,219.90-8,860.20

Finding the Fourth Proportional to 10,127.40, 15,219.90 and 8,860.20

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Solution

The fourth proportional to 10,127.40, 15,219.90 and 8,860.20 is: 13,315.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,127.40 : 15,219.90 = 8,860.20 : x
  2. Step 2: Convert to fraction form
    10,127.40/15,219.90 = 8,860.20/x
  3. Step 3: Cross multiply
    10,127.40x = 15,219.90 × 8,860.20
  4. Step 4: Simplify right side
    10,127.40x = 134,851,357.98
  5. Step 5: Solve for x
    x = 134,851,357.98/10,127.40
  6. Step 6: Final answer
    x = 13,315.50

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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.