Home / 10,143.18-14,003.76-9,515.70

Finding the Fourth Proportional to 10,143.18, 14,003.76 and 9,515.70

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Solution

The fourth proportional to 10,143.18, 14,003.76 and 9,515.70 is: 13,137.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,143.18 : 14,003.76 = 9,515.70 : x
  2. Step 2: Convert to fraction form
    10,143.18/14,003.76 = 9,515.70/x
  3. Step 3: Cross multiply
    10,143.18x = 14,003.76 × 9,515.70
  4. Step 4: Simplify right side
    10,143.18x = 133,255,579.03
  5. Step 5: Solve for x
    x = 133,255,579.03/10,143.18
  6. Step 6: Final answer
    x = 13,137.46

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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.