Home / 12,861.28-17,749.23-7,557.81

Finding the Fourth Proportional to 12,861.28, 17,749.23 and 7,557.81

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Solution

The fourth proportional to 12,861.28, 17,749.23 and 7,557.81 is: 10,430.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,861.28 : 17,749.23 = 7,557.81 : x
  2. Step 2: Convert to fraction form
    12,861.28/17,749.23 = 7,557.81/x
  3. Step 3: Cross multiply
    12,861.28x = 17,749.23 × 7,557.81
  4. Step 4: Simplify right side
    12,861.28x = 134,145,213.08
  5. Step 5: Solve for x
    x = 134,145,213.08/12,861.28
  6. Step 6: Final answer
    x = 10,430.16

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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.