Home / 15,554.28-21,464.88-8,480.70

Finding the Fourth Proportional to 15,554.28, 21,464.88 and 8,480.70

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Solution

The fourth proportional to 15,554.28, 21,464.88 and 8,480.70 is: 11,703.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,554.28 : 21,464.88 = 8,480.70 : x
  2. Step 2: Convert to fraction form
    15,554.28/21,464.88 = 8,480.70/x
  3. Step 3: Cross multiply
    15,554.28x = 21,464.88 × 8,480.70
  4. Step 4: Simplify right side
    15,554.28x = 182,037,207.82
  5. Step 5: Solve for x
    x = 182,037,207.82/15,554.28
  6. Step 6: Final answer
    x = 11,703.35

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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.