Home / 15,456.15-21,329.02-8,557.62

Finding the Fourth Proportional to 15,456.15, 21,329.02 and 8,557.62

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Solution

The fourth proportional to 15,456.15, 21,329.02 and 8,557.62 is: 11,809.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,456.15 : 21,329.02 = 8,557.62 : x
  2. Step 2: Convert to fraction form
    15,456.15/21,329.02 = 8,557.62/x
  3. Step 3: Cross multiply
    15,456.15x = 21,329.02 × 8,557.62
  4. Step 4: Simplify right side
    15,456.15x = 182,525,648.13
  5. Step 5: Solve for x
    x = 182,525,648.13/15,456.15
  6. Step 6: Final answer
    x = 11,809.26

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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.