Home / 15,547.88-21,456.39-8,474.31

Finding the Fourth Proportional to 15,547.88, 21,456.39 and 8,474.31

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Solution

The fourth proportional to 15,547.88, 21,456.39 and 8,474.31 is: 11,694.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,547.88 : 21,456.39 = 8,474.31 : x
  2. Step 2: Convert to fraction form
    15,547.88/21,456.39 = 8,474.31/x
  3. Step 3: Cross multiply
    15,547.88x = 21,456.39 × 8,474.31
  4. Step 4: Simplify right side
    15,547.88x = 181,828,100.34
  5. Step 5: Solve for x
    x = 181,828,100.34/15,547.88
  6. Step 6: Final answer
    x = 11,694.72

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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.