Home / 15,484.28-21,368.32-8,410.71

Finding the Fourth Proportional to 15,484.28, 21,368.32 and 8,410.71

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Solution

The fourth proportional to 15,484.28, 21,368.32 and 8,410.71 is: 11,606.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,484.28 : 21,368.32 = 8,410.71 : x
  2. Step 2: Convert to fraction form
    15,484.28/21,368.32 = 8,410.71/x
  3. Step 3: Cross multiply
    15,484.28x = 21,368.32 × 8,410.71
  4. Step 4: Simplify right side
    15,484.28x = 179,722,721.68
  5. Step 5: Solve for x
    x = 179,722,721.68/15,484.28
  6. Step 6: Final answer
    x = 11,606.78

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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.