Home / 13,279.34-18,332.08-9,321.46

Finding the Fourth Proportional to 13,279.34, 18,332.08 and 9,321.46

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Solution

The fourth proportional to 13,279.34, 18,332.08 and 9,321.46 is: 12,868.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,279.34 : 18,332.08 = 9,321.46 : x
  2. Step 2: Convert to fraction form
    13,279.34/18,332.08 = 9,321.46/x
  3. Step 3: Cross multiply
    13,279.34x = 18,332.08 × 9,321.46
  4. Step 4: Simplify right side
    13,279.34x = 170,881,750.44
  5. Step 5: Solve for x
    x = 170,881,750.44/13,279.34
  6. Step 6: Final answer
    x = 12,868.24

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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.