Home / 15,724.15-21,699.43-8,554.13

Finding the Fourth Proportional to 15,724.15, 21,699.43 and 8,554.13

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Solution

The fourth proportional to 15,724.15, 21,699.43 and 8,554.13 is: 11,804.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,724.15 : 21,699.43 = 8,554.13 : x
  2. Step 2: Convert to fraction form
    15,724.15/21,699.43 = 8,554.13/x
  3. Step 3: Cross multiply
    15,724.15x = 21,699.43 × 8,554.13
  4. Step 4: Simplify right side
    15,724.15x = 185,619,728.71
  5. Step 5: Solve for x
    x = 185,619,728.71/15,724.15
  6. Step 6: Final answer
    x = 11,804.76

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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.