Home / 12,143.28-16,758.99-7,430.70

Finding the Fourth Proportional to 12,143.28, 16,758.99 and 7,430.70

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Solution

The fourth proportional to 12,143.28, 16,758.99 and 7,430.70 is: 10,255.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,143.28 : 16,758.99 = 7,430.70 : x
  2. Step 2: Convert to fraction form
    12,143.28/16,758.99 = 7,430.70/x
  3. Step 3: Cross multiply
    12,143.28x = 16,758.99 × 7,430.70
  4. Step 4: Simplify right side
    12,143.28x = 124,531,026.99
  5. Step 5: Solve for x
    x = 124,531,026.99/12,143.28
  6. Step 6: Final answer
    x = 10,255.14

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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.