Home / 15,904.75-21,948.56-9,280.75

Finding the Fourth Proportional to 15,904.75, 21,948.56 and 9,280.75

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Solution

The fourth proportional to 15,904.75, 21,948.56 and 9,280.75 is: 12,807.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,904.75 : 21,948.56 = 9,280.75 : x
  2. Step 2: Convert to fraction form
    15,904.75/21,948.56 = 9,280.75/x
  3. Step 3: Cross multiply
    15,904.75x = 21,948.56 × 9,280.75
  4. Step 4: Simplify right side
    15,904.75x = 203,699,098.22
  5. Step 5: Solve for x
    x = 203,699,098.22/15,904.75
  6. Step 6: Final answer
    x = 12,807.44

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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.