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Finding the Fourth Proportional to 12,528, 17,284.34 and 7,146.57

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Solution

The fourth proportional to 12,528, 17,284.34 and 7,146.57 is: 9,859.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,528 : 17,284.34 = 7,146.57 : x
  2. Step 2: Convert to fraction form
    12,528/17,284.34 = 7,146.57/x
  3. Step 3: Cross multiply
    12,528x = 17,284.34 × 7,146.57
  4. Step 4: Simplify right side
    12,528x = 123,523,763.58
  5. Step 5: Solve for x
    x = 123,523,763.58/12,528
  6. Step 6: Final answer
    x = 9,859.82

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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.