Home / 28,319.10-42,478.50-7,259.10

Finding the Fourth Proportional to 28,319.10, 42,478.50 and 7,259.10

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Solution

The fourth proportional to 28,319.10, 42,478.50 and 7,259.10 is: 10,888.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,319.10 : 42,478.50 = 7,259.10 : x
  2. Step 2: Convert to fraction form
    28,319.10/42,478.50 = 7,259.10/x
  3. Step 3: Cross multiply
    28,319.10x = 42,478.50 × 7,259.10
  4. Step 4: Simplify right side
    28,319.10x = 308,355,679.35
  5. Step 5: Solve for x
    x = 308,355,679.35/28,319.10
  6. Step 6: Final answer
    x = 10,888.61

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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.