Home / 10,089.20-15,117.60-7,464.80

Finding the Fourth Proportional to 10,089.20, 15,117.60 and 7,464.80

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Solution

The fourth proportional to 10,089.20, 15,117.60 and 7,464.80 is: 11,185.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,089.20 : 15,117.60 = 7,464.80 : x
  2. Step 2: Convert to fraction form
    10,089.20/15,117.60 = 7,464.80/x
  3. Step 3: Cross multiply
    10,089.20x = 15,117.60 × 7,464.80
  4. Step 4: Simplify right side
    10,089.20x = 112,849,860.48
  5. Step 5: Solve for x
    x = 112,849,860.48/10,089.20
  6. Step 6: Final answer
    x = 11,185.21

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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.