Home / 28,152.87-38,850.35-15,406.00

Finding the Fourth Proportional to 28,152.87, 38,850.35 and 15,406.00

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Solution

The fourth proportional to 28,152.87, 38,850.35 and 15,406.00 is: 21,259.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,152.87 : 38,850.35 = 15,406.00 : x
  2. Step 2: Convert to fraction form
    28,152.87/38,850.35 = 15,406.00/x
  3. Step 3: Cross multiply
    28,152.87x = 38,850.35 × 15,406.00
  4. Step 4: Simplify right side
    28,152.87x = 598,528,433.49
  5. Step 5: Solve for x
    x = 598,528,433.49/28,152.87
  6. Step 6: Final answer
    x = 21,259.95

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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.