Home / 28,008.72-42,015.78-9,284.76

Finding the Fourth Proportional to 28,008.72, 42,015.78 and 9,284.76

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Solution

The fourth proportional to 28,008.72, 42,015.78 and 9,284.76 is: 13,928.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,008.72 : 42,015.78 = 9,284.76 : x
  2. Step 2: Convert to fraction form
    28,008.72/42,015.78 = 9,284.76/x
  3. Step 3: Cross multiply
    28,008.72x = 42,015.78 × 9,284.76
  4. Step 4: Simplify right side
    28,008.72x = 390,106,433.51
  5. Step 5: Solve for x
    x = 390,106,433.51/28,008.72
  6. Step 6: Final answer
    x = 13,928.04

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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.