Home / 18,686.09-28,031.19-9,328.46

Finding the Fourth Proportional to 18,686.09, 28,031.19 and 9,328.46

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Solution

The fourth proportional to 18,686.09, 28,031.19 and 9,328.46 is: 13,993.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,686.09 : 28,031.19 = 9,328.46 : x
  2. Step 2: Convert to fraction form
    18,686.09/28,031.19 = 9,328.46/x
  3. Step 3: Cross multiply
    18,686.09x = 28,031.19 × 9,328.46
  4. Step 4: Simplify right side
    18,686.09x = 261,487,834.67
  5. Step 5: Solve for x
    x = 261,487,834.67/18,686.09
  6. Step 6: Final answer
    x = 13,993.72

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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.