Home / 15,228.98-21,011.25-8,513.66

Finding the Fourth Proportional to 15,228.98, 21,011.25 and 8,513.66

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Solution

The fourth proportional to 15,228.98, 21,011.25 and 8,513.66 is: 11,746.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,228.98 : 21,011.25 = 8,513.66 : x
  2. Step 2: Convert to fraction form
    15,228.98/21,011.25 = 8,513.66/x
  3. Step 3: Cross multiply
    15,228.98x = 21,011.25 × 8,513.66
  4. Step 4: Simplify right side
    15,228.98x = 178,882,638.68
  5. Step 5: Solve for x
    x = 178,882,638.68/15,228.98
  6. Step 6: Final answer
    x = 11,746.20

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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.