Home / 13,139.28-19,680.03-9,448.65

Finding the Fourth Proportional to 13,139.28, 19,680.03 and 9,448.65

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Solution

The fourth proportional to 13,139.28, 19,680.03 and 9,448.65 is: 14,152.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,139.28 : 19,680.03 = 9,448.65 : x
  2. Step 2: Convert to fraction form
    13,139.28/19,680.03 = 9,448.65/x
  3. Step 3: Cross multiply
    13,139.28x = 19,680.03 × 9,448.65
  4. Step 4: Simplify right side
    13,139.28x = 185,949,715.46
  5. Step 5: Solve for x
    x = 185,949,715.46/13,139.28
  6. Step 6: Final answer
    x = 14,152.20

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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.