Home / 12,547.47-18,818.23-3,660.51

Finding the Fourth Proportional to 12,547.47, 18,818.23 and 3,660.51

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Solution

The fourth proportional to 12,547.47, 18,818.23 and 3,660.51 is: 5,489.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,547.47 : 18,818.23 = 3,660.51 : x
  2. Step 2: Convert to fraction form
    12,547.47/18,818.23 = 3,660.51/x
  3. Step 3: Cross multiply
    12,547.47x = 18,818.23 × 3,660.51
  4. Step 4: Simplify right side
    12,547.47x = 68,884,309.95
  5. Step 5: Solve for x
    x = 68,884,309.95/12,547.47
  6. Step 6: Final answer
    x = 5,489.90

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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.