Home / 12,547.61-18,821.41-5,146.84

Finding the Fourth Proportional to 12,547.61, 18,821.41 and 5,146.84

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Solution

The fourth proportional to 12,547.61, 18,821.41 and 5,146.84 is: 7,720.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,547.61 : 18,821.41 = 5,146.84 : x
  2. Step 2: Convert to fraction form
    12,547.61/18,821.41 = 5,146.84/x
  3. Step 3: Cross multiply
    12,547.61x = 18,821.41 × 5,146.84
  4. Step 4: Simplify right side
    12,547.61x = 96,870,825.46
  5. Step 5: Solve for x
    x = 96,870,825.46/12,547.61
  6. Step 6: Final answer
    x = 7,720.26

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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.