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Finding the Fourth Proportional to 25,345.60, 38,035.60 and 8,929.60

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Solution

The fourth proportional to 25,345.60, 38,035.60 and 8,929.60 is: 13,400.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,345.60 : 38,035.60 = 8,929.60 : x
  2. Step 2: Convert to fraction form
    25,345.60/38,035.60 = 8,929.60/x
  3. Step 3: Cross multiply
    25,345.60x = 38,035.60 × 8,929.60
  4. Step 4: Simplify right side
    25,345.60x = 339,642,693.76
  5. Step 5: Solve for x
    x = 339,642,693.76/25,345.60
  6. Step 6: Final answer
    x = 13,400.46

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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.