Home / 12,140.53-16,758.63-9,488.79

Finding the Fourth Proportional to 12,140.53, 16,758.63 and 9,488.79

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Solution

The fourth proportional to 12,140.53, 16,758.63 and 9,488.79 is: 13,098.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,140.53 : 16,758.63 = 9,488.79 : x
  2. Step 2: Convert to fraction form
    12,140.53/16,758.63 = 9,488.79/x
  3. Step 3: Cross multiply
    12,140.53x = 16,758.63 × 9,488.79
  4. Step 4: Simplify right side
    12,140.53x = 159,019,120.76
  5. Step 5: Solve for x
    x = 159,019,120.76/12,140.53
  6. Step 6: Final answer
    x = 13,098.20

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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.