Home / 13,398.98-18,482.37-8,861.66

Finding the Fourth Proportional to 13,398.98, 18,482.37 and 8,861.66

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Solution

The fourth proportional to 13,398.98, 18,482.37 and 8,861.66 is: 12,223.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,398.98 : 18,482.37 = 8,861.66 : x
  2. Step 2: Convert to fraction form
    13,398.98/18,482.37 = 8,861.66/x
  3. Step 3: Cross multiply
    13,398.98x = 18,482.37 × 8,861.66
  4. Step 4: Simplify right side
    13,398.98x = 163,784,386.52
  5. Step 5: Solve for x
    x = 163,784,386.52/13,398.98
  6. Step 6: Final answer
    x = 12,223.65

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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.