Home / 15,715.73-21,681.52-8,997.74

Finding the Fourth Proportional to 15,715.73, 21,681.52 and 8,997.74

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Solution

The fourth proportional to 15,715.73, 21,681.52 and 8,997.74 is: 12,413.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,715.73 : 21,681.52 = 8,997.74 : x
  2. Step 2: Convert to fraction form
    15,715.73/21,681.52 = 8,997.74/x
  3. Step 3: Cross multiply
    15,715.73x = 21,681.52 × 8,997.74
  4. Step 4: Simplify right side
    15,715.73x = 195,084,679.76
  5. Step 5: Solve for x
    x = 195,084,679.76/15,715.73
  6. Step 6: Final answer
    x = 12,413.34

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Half scale
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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.