Home / 15,520.95-21,407.48-9,850.83

Finding the Fourth Proportional to 15,520.95, 21,407.48 and 9,850.83

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Solution

The fourth proportional to 15,520.95, 21,407.48 and 9,850.83 is: 13,586.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,520.95 : 21,407.48 = 9,850.83 : x
  2. Step 2: Convert to fraction form
    15,520.95/21,407.48 = 9,850.83/x
  3. Step 3: Cross multiply
    15,520.95x = 21,407.48 × 9,850.83
  4. Step 4: Simplify right side
    15,520.95x = 210,881,396.95
  5. Step 5: Solve for x
    x = 210,881,396.95/15,520.95
  6. Step 6: Final answer
    x = 13,586.89

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Double scale
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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.