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Finding the Fourth Proportional to 32,863.40, 45,335.20 and 19,428.20

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Solution

The fourth proportional to 32,863.40, 45,335.20 and 19,428.20 is: 26,801.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    32,863.40 : 45,335.20 = 19,428.20 : x
  2. Step 2: Convert to fraction form
    32,863.40/45,335.20 = 19,428.20/x
  3. Step 3: Cross multiply
    32,863.40x = 45,335.20 × 19,428.20
  4. Step 4: Simplify right side
    32,863.40x = 880,781,332.64
  5. Step 5: Solve for x
    x = 880,781,332.64/32,863.40
  6. Step 6: Final answer
    x = 26,801.28

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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.