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Finding the Fourth Proportional to 15,482.79, 21,366.48 and 8,768.25

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Solution

The fourth proportional to 15,482.79, 21,366.48 and 8,768.25 is: 12,100.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,482.79 : 21,366.48 = 8,768.25 : x
  2. Step 2: Convert to fraction form
    15,482.79/21,366.48 = 8,768.25/x
  3. Step 3: Cross multiply
    15,482.79x = 21,366.48 × 8,768.25
  4. Step 4: Simplify right side
    15,482.79x = 187,346,638.26
  5. Step 5: Solve for x
    x = 187,346,638.26/15,482.79
  6. Step 6: Final answer
    x = 12,100.32

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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.