Home / 28,095.56-38,771.70-15,520.28

Finding the Fourth Proportional to 28,095.56, 38,771.70 and 15,520.28

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Solution

The fourth proportional to 28,095.56, 38,771.70 and 15,520.28 is: 21,417.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,095.56 : 38,771.70 = 15,520.28 : x
  2. Step 2: Convert to fraction form
    28,095.56/38,771.70 = 15,520.28/x
  3. Step 3: Cross multiply
    28,095.56x = 38,771.70 × 15,520.28
  4. Step 4: Simplify right side
    28,095.56x = 601,747,640.08
  5. Step 5: Solve for x
    x = 601,747,640.08/28,095.56
  6. Step 6: Final answer
    x = 21,417.89

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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.