Home / 15,494.04-21,381.33-8,781.84

Finding the Fourth Proportional to 15,494.04, 21,381.33 and 8,781.84

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Solution

The fourth proportional to 15,494.04, 21,381.33 and 8,781.84 is: 12,118.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,494.04 : 21,381.33 = 8,781.84 : x
  2. Step 2: Convert to fraction form
    15,494.04/21,381.33 = 8,781.84/x
  3. Step 3: Cross multiply
    15,494.04x = 21,381.33 × 8,781.84
  4. Step 4: Simplify right side
    15,494.04x = 187,767,268.23
  5. Step 5: Solve for x
    x = 187,767,268.23/15,494.04
  6. Step 6: Final answer
    x = 12,118.68

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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.