Home / 15,363.12-21,200.85-8,648.72

Finding the Fourth Proportional to 15,363.12, 21,200.85 and 8,648.72

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Solution

The fourth proportional to 15,363.12, 21,200.85 and 8,648.72 is: 11,935.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,363.12 : 21,200.85 = 8,648.72 : x
  2. Step 2: Convert to fraction form
    15,363.12/21,200.85 = 8,648.72/x
  3. Step 3: Cross multiply
    15,363.12x = 21,200.85 × 8,648.72
  4. Step 4: Simplify right side
    15,363.12x = 183,360,109.41
  5. Step 5: Solve for x
    x = 183,360,109.41/15,363.12
  6. Step 6: Final answer
    x = 11,935.08

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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.