Home / 15,299.31-21,113.37-8,585.43

Finding the Fourth Proportional to 15,299.31, 21,113.37 and 8,585.43

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Solution

The fourth proportional to 15,299.31, 21,113.37 and 8,585.43 is: 11,848.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,299.31 : 21,113.37 = 8,585.43 : x
  2. Step 2: Convert to fraction form
    15,299.31/21,113.37 = 8,585.43/x
  3. Step 3: Cross multiply
    15,299.31x = 21,113.37 × 8,585.43
  4. Step 4: Simplify right side
    15,299.31x = 181,267,360.20
  5. Step 5: Solve for x
    x = 181,267,360.20/15,299.31
  6. Step 6: Final answer
    x = 11,848.07

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Double scale
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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.