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Finding the Fourth Proportional to 19,236.64, 26,539.20 and 12,528

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Solution

The fourth proportional to 19,236.64, 26,539.20 and 12,528 is: 17,283.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,236.64 : 26,539.20 = 12,528 : x
  2. Step 2: Convert to fraction form
    19,236.64/26,539.20 = 12,528/x
  3. Step 3: Cross multiply
    19,236.64x = 26,539.20 × 12,528
  4. Step 4: Simplify right side
    19,236.64x = 332,483,097.60
  5. Step 5: Solve for x
    x = 332,483,097.60/19,236.64
  6. Step 6: Final answer
    x = 17,283.84

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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.