Home / 15,840.17-21,861.75-9,124.50

Finding the Fourth Proportional to 15,840.17, 21,861.75 and 9,124.50

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Solution

The fourth proportional to 15,840.17, 21,861.75 and 9,124.50 is: 12,593.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,840.17 : 21,861.75 = 9,124.50 : x
  2. Step 2: Convert to fraction form
    15,840.17/21,861.75 = 9,124.50/x
  3. Step 3: Cross multiply
    15,840.17x = 21,861.75 × 9,124.50
  4. Step 4: Simplify right side
    15,840.17x = 199,477,537.88
  5. Step 5: Solve for x
    x = 199,477,537.88/15,840.17
  6. Step 6: Final answer
    x = 12,593.14

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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.