Home / 10,317.64-15,487.38-6,424.78

Finding the Fourth Proportional to 10,317.64, 15,487.38 and 6,424.78

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Solution

The fourth proportional to 10,317.64, 15,487.38 and 6,424.78 is: 9,643.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,317.64 : 15,487.38 = 6,424.78 : x
  2. Step 2: Convert to fraction form
    10,317.64/15,487.38 = 6,424.78/x
  3. Step 3: Cross multiply
    10,317.64x = 15,487.38 × 6,424.78
  4. Step 4: Simplify right side
    10,317.64x = 99,503,009.28
  5. Step 5: Solve for x
    x = 99,503,009.28/10,317.64
  6. Step 6: Final answer
    x = 9,643.97

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.