Home / 13,122.48-18,108.84-7,154.16

Finding the Fourth Proportional to 13,122.48, 18,108.84 and 7,154.16

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Solution

The fourth proportional to 13,122.48, 18,108.84 and 7,154.16 is: 9,872.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,122.48 : 18,108.84 = 7,154.16 : x
  2. Step 2: Convert to fraction form
    13,122.48/18,108.84 = 7,154.16/x
  3. Step 3: Cross multiply
    13,122.48x = 18,108.84 × 7,154.16
  4. Step 4: Simplify right side
    13,122.48x = 129,553,538.77
  5. Step 5: Solve for x
    x = 129,553,538.77/13,122.48
  6. Step 6: Final answer
    x = 9,872.64

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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.