Home / 12,555.71-18,837.20-7,013.18

Finding the Fourth Proportional to 12,555.71, 18,837.20 and 7,013.18

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Solution

The fourth proportional to 12,555.71, 18,837.20 and 7,013.18 is: 10,521.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,555.71 : 18,837.20 = 7,013.18 : x
  2. Step 2: Convert to fraction form
    12,555.71/18,837.20 = 7,013.18/x
  3. Step 3: Cross multiply
    12,555.71x = 18,837.20 × 7,013.18
  4. Step 4: Simplify right side
    12,555.71x = 132,108,580.11
  5. Step 5: Solve for x
    x = 132,108,580.11/12,555.71
  6. Step 6: Final answer
    x = 10,521.80

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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.