Home / 28,003.90-42,004.95-9,284.80

Finding the Fourth Proportional to 28,003.90, 42,004.95 and 9,284.80

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Solution

The fourth proportional to 28,003.90, 42,004.95 and 9,284.80 is: 13,926.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,003.90 : 42,004.95 = 9,284.80 : x
  2. Step 2: Convert to fraction form
    28,003.90/42,004.95 = 9,284.80/x
  3. Step 3: Cross multiply
    28,003.90x = 42,004.95 × 9,284.80
  4. Step 4: Simplify right side
    28,003.90x = 390,007,559.76
  5. Step 5: Solve for x
    x = 390,007,559.76/28,003.90
  6. Step 6: Final answer
    x = 13,926.90

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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.