Home / 12,170.65-16,801.13-7,134.20

Finding the Fourth Proportional to 12,170.65, 16,801.13 and 7,134.20

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Solution

The fourth proportional to 12,170.65, 16,801.13 and 7,134.20 is: 9,848.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,170.65 : 16,801.13 = 7,134.20 : x
  2. Step 2: Convert to fraction form
    12,170.65/16,801.13 = 7,134.20/x
  3. Step 3: Cross multiply
    12,170.65x = 16,801.13 × 7,134.20
  4. Step 4: Simplify right side
    12,170.65x = 119,862,621.65
  5. Step 5: Solve for x
    x = 119,862,621.65/12,170.65
  6. Step 6: Final answer
    x = 9,848.50

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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.