Home / 13,815.28-19,065.12-7,527.70

Finding the Fourth Proportional to 13,815.28, 19,065.12 and 7,527.70

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Solution

The fourth proportional to 13,815.28, 19,065.12 and 7,527.70 is: 10,388.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,815.28 : 19,065.12 = 7,527.70 : x
  2. Step 2: Convert to fraction form
    13,815.28/19,065.12 = 7,527.70/x
  3. Step 3: Cross multiply
    13,815.28x = 19,065.12 × 7,527.70
  4. Step 4: Simplify right side
    13,815.28x = 143,516,503.82
  5. Step 5: Solve for x
    x = 143,516,503.82/13,815.28
  6. Step 6: Final answer
    x = 10,388.24

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.