Home / 11,140.28-15,373.59-6,424.56

Finding the Fourth Proportional to 11,140.28, 15,373.59 and 6,424.56

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Solution

The fourth proportional to 11,140.28, 15,373.59 and 6,424.56 is: 8,865.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,140.28 : 15,373.59 = 6,424.56 : x
  2. Step 2: Convert to fraction form
    11,140.28/15,373.59 = 6,424.56/x
  3. Step 3: Cross multiply
    11,140.28x = 15,373.59 × 6,424.56
  4. Step 4: Simplify right side
    11,140.28x = 98,768,573.74
  5. Step 5: Solve for x
    x = 98,768,573.74/11,140.28
  6. Step 6: Final answer
    x = 8,865.89

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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.