Home / 18,258.31-25,186.80-12,583.18

Finding the Fourth Proportional to 18,258.31, 25,186.80 and 12,583.18

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Solution

The fourth proportional to 18,258.31, 25,186.80 and 12,583.18 is: 17,358.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,258.31 : 25,186.80 = 12,583.18 : x
  2. Step 2: Convert to fraction form
    18,258.31/25,186.80 = 12,583.18/x
  3. Step 3: Cross multiply
    18,258.31x = 25,186.80 × 12,583.18
  4. Step 4: Simplify right side
    18,258.31x = 316,930,038.02
  5. Step 5: Solve for x
    x = 316,930,038.02/18,258.31
  6. Step 6: Final answer
    x = 17,358.13

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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.