Home / 15,724.63-21,700.32-8,651.07

Finding the Fourth Proportional to 15,724.63, 21,700.32 and 8,651.07

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Solution

The fourth proportional to 15,724.63, 21,700.32 and 8,651.07 is: 11,938.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,724.63 : 21,700.32 = 8,651.07 : x
  2. Step 2: Convert to fraction form
    15,724.63/21,700.32 = 8,651.07/x
  3. Step 3: Cross multiply
    15,724.63x = 21,700.32 × 8,651.07
  4. Step 4: Simplify right side
    15,724.63x = 187,730,878.84
  5. Step 5: Solve for x
    x = 187,730,878.84/15,724.63
  6. Step 6: Final answer
    x = 11,938.66

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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.