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Finding the Fourth Proportional to 15,702.84, 21,670.01 and 8,532.81

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Solution

The fourth proportional to 15,702.84, 21,670.01 and 8,532.81 is: 11,775.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,702.84 : 21,670.01 = 8,532.81 : x
  2. Step 2: Convert to fraction form
    15,702.84/21,670.01 = 8,532.81/x
  3. Step 3: Cross multiply
    15,702.84x = 21,670.01 × 8,532.81
  4. Step 4: Simplify right side
    15,702.84x = 184,906,035.36
  5. Step 5: Solve for x
    x = 184,906,035.36/15,702.84
  6. Step 6: Final answer
    x = 11,775.32

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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.