Home / 28,246.85-38,980.55-15,500.25

Finding the Fourth Proportional to 28,246.85, 38,980.55 and 15,500.25

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Solution

The fourth proportional to 28,246.85, 38,980.55 and 15,500.25 is: 21,390.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,246.85 : 38,980.55 = 15,500.25 : x
  2. Step 2: Convert to fraction form
    28,246.85/38,980.55 = 15,500.25/x
  3. Step 3: Cross multiply
    28,246.85x = 38,980.55 × 15,500.25
  4. Step 4: Simplify right side
    28,246.85x = 604,208,060.76
  5. Step 5: Solve for x
    x = 604,208,060.76/28,246.85
  6. Step 6: Final answer
    x = 21,390.28

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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.