Home / 15,145.40-22,718.10-10,479.80

Finding the Fourth Proportional to 15,145.40, 22,718.10 and 10,479.80

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Solution

The fourth proportional to 15,145.40, 22,718.10 and 10,479.80 is: 15,719.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,145.40 : 22,718.10 = 10,479.80 : x
  2. Step 2: Convert to fraction form
    15,145.40/22,718.10 = 10,479.80/x
  3. Step 3: Cross multiply
    15,145.40x = 22,718.10 × 10,479.80
  4. Step 4: Simplify right side
    15,145.40x = 238,081,144.38
  5. Step 5: Solve for x
    x = 238,081,144.38/15,145.40
  6. Step 6: Final answer
    x = 15,719.70

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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.