Home / 18,766.50-25,886.48-12,393.15

Finding the Fourth Proportional to 18,766.50, 25,886.48 and 12,393.15

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Solution

The fourth proportional to 18,766.50, 25,886.48 and 12,393.15 is: 17,095.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,766.50 : 25,886.48 = 12,393.15 : x
  2. Step 2: Convert to fraction form
    18,766.50/25,886.48 = 12,393.15/x
  3. Step 3: Cross multiply
    18,766.50x = 25,886.48 × 12,393.15
  4. Step 4: Simplify right side
    18,766.50x = 320,814,931.16
  5. Step 5: Solve for x
    x = 320,814,931.16/18,766.50
  6. Step 6: Final answer
    x = 17,095.09

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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.