Home / 12,557.09-17,328.71-6,891.69

Finding the Fourth Proportional to 12,557.09, 17,328.71 and 6,891.69

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Solution

The fourth proportional to 12,557.09, 17,328.71 and 6,891.69 is: 9,510.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,557.09 : 17,328.71 = 6,891.69 : x
  2. Step 2: Convert to fraction form
    12,557.09/17,328.71 = 6,891.69/x
  3. Step 3: Cross multiply
    12,557.09x = 17,328.71 × 6,891.69
  4. Step 4: Simplify right side
    12,557.09x = 119,424,062.96
  5. Step 5: Solve for x
    x = 119,424,062.96/12,557.09
  6. Step 6: Final answer
    x = 9,510.49

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Half scale
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Double scale
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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.