Home / 28,470.70-39,288.75-15,895.18

Finding the Fourth Proportional to 28,470.70, 39,288.75 and 15,895.18

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Solution

The fourth proportional to 28,470.70, 39,288.75 and 15,895.18 is: 21,934.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,470.70 : 39,288.75 = 15,895.18 : x
  2. Step 2: Convert to fraction form
    28,470.70/39,288.75 = 15,895.18/x
  3. Step 3: Cross multiply
    28,470.70x = 39,288.75 × 15,895.18
  4. Step 4: Simplify right side
    28,470.70x = 624,501,753.23
  5. Step 5: Solve for x
    x = 624,501,753.23/28,470.70
  6. Step 6: Final answer
    x = 21,934.89

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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.