Home / 19,197.20-28,763.40-9,315.20

Finding the Fourth Proportional to 19,197.20, 28,763.40 and 9,315.20

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Solution

The fourth proportional to 19,197.20, 28,763.40 and 9,315.20 is: 13,957.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,197.20 : 28,763.40 = 9,315.20 : x
  2. Step 2: Convert to fraction form
    19,197.20/28,763.40 = 9,315.20/x
  3. Step 3: Cross multiply
    19,197.20x = 28,763.40 × 9,315.20
  4. Step 4: Simplify right side
    19,197.20x = 267,936,823.68
  5. Step 5: Solve for x
    x = 267,936,823.68/19,197.20
  6. Step 6: Final answer
    x = 13,957.08

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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.