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Finding the Fourth Proportional to 32,615.78, 45,009.78 and 18,468.63

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Solution

The fourth proportional to 32,615.78, 45,009.78 and 18,468.63 is: 25,486.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    32,615.78 : 45,009.78 = 18,468.63 : x
  2. Step 2: Convert to fraction form
    32,615.78/45,009.78 = 18,468.63/x
  3. Step 3: Cross multiply
    32,615.78x = 45,009.78 × 18,468.63
  4. Step 4: Simplify right side
    32,615.78x = 831,268,748.15
  5. Step 5: Solve for x
    x = 831,268,748.15/32,615.78
  6. Step 6: Final answer
    x = 25,486.70

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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.