Home / 15,424.16-21,285.09-8,350.43

Finding the Fourth Proportional to 15,424.16, 21,285.09 and 8,350.43

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Solution

The fourth proportional to 15,424.16, 21,285.09 and 8,350.43 is: 11,523.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,424.16 : 21,285.09 = 8,350.43 : x
  2. Step 2: Convert to fraction form
    15,424.16/21,285.09 = 8,350.43/x
  3. Step 3: Cross multiply
    15,424.16x = 21,285.09 × 8,350.43
  4. Step 4: Simplify right side
    15,424.16x = 177,739,547.66
  5. Step 5: Solve for x
    x = 177,739,547.66/15,424.16
  6. Step 6: Final answer
    x = 11,523.45

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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.