Home / 28,007.28-42,013.32-9,283.32

Finding the Fourth Proportional to 28,007.28, 42,013.32 and 9,283.32

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Solution

The fourth proportional to 28,007.28, 42,013.32 and 9,283.32 is: 13,925.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,007.28 : 42,013.32 = 9,283.32 : x
  2. Step 2: Convert to fraction form
    28,007.28/42,013.32 = 9,283.32/x
  3. Step 3: Cross multiply
    28,007.28x = 42,013.32 × 9,283.32
  4. Step 4: Simplify right side
    28,007.28x = 390,023,093.82
  5. Step 5: Solve for x
    x = 390,023,093.82/28,007.28
  6. Step 6: Final answer
    x = 13,925.78

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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.