Home / 12,717.81-17,538.08-9,700.65

Finding the Fourth Proportional to 12,717.81, 17,538.08 and 9,700.65

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Solution

The fourth proportional to 12,717.81, 17,538.08 and 9,700.65 is: 13,377.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,717.81 : 17,538.08 = 9,700.65 : x
  2. Step 2: Convert to fraction form
    12,717.81/17,538.08 = 9,700.65/x
  3. Step 3: Cross multiply
    12,717.81x = 17,538.08 × 9,700.65
  4. Step 4: Simplify right side
    12,717.81x = 170,130,727.25
  5. Step 5: Solve for x
    x = 170,130,727.25/12,717.81
  6. Step 6: Final answer
    x = 13,377.36

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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.