Home / 15,815.61-23,720.94-5,285.55

Finding the Fourth Proportional to 15,815.61, 23,720.94 and 5,285.55

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Solution

The fourth proportional to 15,815.61, 23,720.94 and 5,285.55 is: 7,927.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,815.61 : 23,720.94 = 5,285.55 : x
  2. Step 2: Convert to fraction form
    15,815.61/23,720.94 = 5,285.55/x
  3. Step 3: Cross multiply
    15,815.61x = 23,720.94 × 5,285.55
  4. Step 4: Simplify right side
    15,815.61x = 125,378,214.42
  5. Step 5: Solve for x
    x = 125,378,214.42/15,815.61
  6. Step 6: Final answer
    x = 7,927.50

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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.