Home / 12,547.89-18,821.84-4,653.12

Finding the Fourth Proportional to 12,547.89, 18,821.84 and 4,653.12

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Solution

The fourth proportional to 12,547.89, 18,821.84 and 4,653.12 is: 6,979.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,547.89 : 18,821.84 = 4,653.12 : x
  2. Step 2: Convert to fraction form
    12,547.89/18,821.84 = 4,653.12/x
  3. Step 3: Cross multiply
    12,547.89x = 18,821.84 × 4,653.12
  4. Step 4: Simplify right side
    12,547.89x = 87,580,280.14
  5. Step 5: Solve for x
    x = 87,580,280.14/12,547.89
  6. Step 6: Final answer
    x = 6,979.68

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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.