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Finding the Fourth Proportional to 28,015.60, 42,023.40 and 23,787.40

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Solution

The fourth proportional to 28,015.60, 42,023.40 and 23,787.40 is: 35,681.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,015.60 : 42,023.40 = 23,787.40 : x
  2. Step 2: Convert to fraction form
    28,015.60/42,023.40 = 23,787.40/x
  3. Step 3: Cross multiply
    28,015.60x = 42,023.40 × 23,787.40
  4. Step 4: Simplify right side
    28,015.60x = 999,627,425.16
  5. Step 5: Solve for x
    x = 999,627,425.16/28,015.60
  6. Step 6: Final answer
    x = 35,681.10

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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.