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Finding the Fourth Proportional to 25,837.20, 38,762.40 and 8,307.20

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Solution

The fourth proportional to 25,837.20, 38,762.40 and 8,307.20 is: 12,462.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,837.20 : 38,762.40 = 8,307.20 : x
  2. Step 2: Convert to fraction form
    25,837.20/38,762.40 = 8,307.20/x
  3. Step 3: Cross multiply
    25,837.20x = 38,762.40 × 8,307.20
  4. Step 4: Simplify right side
    25,837.20x = 322,007,009.28
  5. Step 5: Solve for x
    x = 322,007,009.28/25,837.20
  6. Step 6: Final answer
    x = 12,462.92

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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.