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Finding the Fourth Proportional to 25,945.70, 38,904.15 and 10,345.70

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Solution

The fourth proportional to 25,945.70, 38,904.15 and 10,345.70 is: 15,512.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,945.70 : 38,904.15 = 10,345.70 : x
  2. Step 2: Convert to fraction form
    25,945.70/38,904.15 = 10,345.70/x
  3. Step 3: Cross multiply
    25,945.70x = 38,904.15 × 10,345.70
  4. Step 4: Simplify right side
    25,945.70x = 402,490,664.66
  5. Step 5: Solve for x
    x = 402,490,664.66/25,945.70
  6. Step 6: Final answer
    x = 15,512.81

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.