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Finding the Fourth Proportional to 12,570.84, 17,341.62 and 8,792.64

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Solution

The fourth proportional to 12,570.84, 17,341.62 and 8,792.64 is: 12,129.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,570.84 : 17,341.62 = 8,792.64 : x
  2. Step 2: Convert to fraction form
    12,570.84/17,341.62 = 8,792.64/x
  3. Step 3: Cross multiply
    12,570.84x = 17,341.62 × 8,792.64
  4. Step 4: Simplify right side
    12,570.84x = 152,478,621.68
  5. Step 5: Solve for x
    x = 152,478,621.68/12,570.84
  6. Step 6: Final answer
    x = 12,129.55

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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.