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Finding the Fourth Proportional to 12,547.71, 17,316.08 and 7,512.15

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Solution

The fourth proportional to 12,547.71, 17,316.08 and 7,512.15 is: 10,366.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,547.71 : 17,316.08 = 7,512.15 : x
  2. Step 2: Convert to fraction form
    12,547.71/17,316.08 = 7,512.15/x
  3. Step 3: Cross multiply
    12,547.71x = 17,316.08 × 7,512.15
  4. Step 4: Simplify right side
    12,547.71x = 130,080,990.37
  5. Step 5: Solve for x
    x = 130,080,990.37/12,547.71
  6. Step 6: Final answer
    x = 10,366.91

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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.