Home / 18,681.50-25,780.47-10,298.18

Finding the Fourth Proportional to 18,681.50, 25,780.47 and 10,298.18

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Solution

The fourth proportional to 18,681.50, 25,780.47 and 10,298.18 is: 14,211.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,681.50 : 25,780.47 = 10,298.18 : x
  2. Step 2: Convert to fraction form
    18,681.50/25,780.47 = 10,298.18/x
  3. Step 3: Cross multiply
    18,681.50x = 25,780.47 × 10,298.18
  4. Step 4: Simplify right side
    18,681.50x = 265,491,920.54
  5. Step 5: Solve for x
    x = 265,491,920.54/18,681.50
  6. Step 6: Final answer
    x = 14,211.49

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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.