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Finding the Fourth Proportional to 25,621.67, 35,351.89 and 15,549.89

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Solution

The fourth proportional to 25,621.67, 35,351.89 and 15,549.89 is: 21,455.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,621.67 : 35,351.89 = 15,549.89 : x
  2. Step 2: Convert to fraction form
    25,621.67/35,351.89 = 15,549.89/x
  3. Step 3: Cross multiply
    25,621.67x = 35,351.89 × 15,549.89
  4. Step 4: Simplify right side
    25,621.67x = 549,717,785.16
  5. Step 5: Solve for x
    x = 549,717,785.16/25,621.67
  6. Step 6: Final answer
    x = 21,455.19

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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.