Home / 13,017.70-17,964.45-7,715.14

Finding the Fourth Proportional to 13,017.70, 17,964.45 and 7,715.14

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Solution

The fourth proportional to 13,017.70, 17,964.45 and 7,715.14 is: 10,646.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,017.70 : 17,964.45 = 7,715.14 : x
  2. Step 2: Convert to fraction form
    13,017.70/17,964.45 = 7,715.14/x
  3. Step 3: Cross multiply
    13,017.70x = 17,964.45 × 7,715.14
  4. Step 4: Simplify right side
    13,017.70x = 138,598,246.77
  5. Step 5: Solve for x
    x = 138,598,246.77/13,017.70
  6. Step 6: Final answer
    x = 10,646.91

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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.