Home / 15,267.12-21,071.88-8,983.08

Finding the Fourth Proportional to 15,267.12, 21,071.88 and 8,983.08

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Solution

The fourth proportional to 15,267.12, 21,071.88 and 8,983.08 is: 12,398.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,267.12 : 21,071.88 = 8,983.08 : x
  2. Step 2: Convert to fraction form
    15,267.12/21,071.88 = 8,983.08/x
  3. Step 3: Cross multiply
    15,267.12x = 21,071.88 × 8,983.08
  4. Step 4: Simplify right side
    15,267.12x = 189,290,383.79
  5. Step 5: Solve for x
    x = 189,290,383.79/15,267.12
  6. Step 6: Final answer
    x = 12,398.57

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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.