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Finding the Fourth Proportional to 25,129.65, 37,875.10 and 21,661.51

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Solution

The fourth proportional to 25,129.65, 37,875.10 and 21,661.51 is: 32,647.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,129.65 : 37,875.10 = 21,661.51 : x
  2. Step 2: Convert to fraction form
    25,129.65/37,875.10 = 21,661.51/x
  3. Step 3: Cross multiply
    25,129.65x = 37,875.10 × 21,661.51
  4. Step 4: Simplify right side
    25,129.65x = 820,431,931.82
  5. Step 5: Solve for x
    x = 820,431,931.82/25,129.65
  6. Step 6: Final answer
    x = 32,647.97

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.