Home / 15,859.12-21,885.60-10,279.84

Finding the Fourth Proportional to 15,859.12, 21,885.60 and 10,279.84

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Solution

The fourth proportional to 15,859.12, 21,885.60 and 10,279.84 is: 14,186.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,859.12 : 21,885.60 = 10,279.84 : x
  2. Step 2: Convert to fraction form
    15,859.12/21,885.60 = 10,279.84/x
  3. Step 3: Cross multiply
    15,859.12x = 21,885.60 × 10,279.84
  4. Step 4: Simplify right side
    15,859.12x = 224,980,466.30
  5. Step 5: Solve for x
    x = 224,980,466.30/15,859.12
  6. Step 6: Final answer
    x = 14,186.19

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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.