Home / 20,316.98-30,478.37-6,278.23

Finding the Fourth Proportional to 20,316.98, 30,478.37 and 6,278.23

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Solution

The fourth proportional to 20,316.98, 30,478.37 and 6,278.23 is: 9,418.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,316.98 : 30,478.37 = 6,278.23 : x
  2. Step 2: Convert to fraction form
    20,316.98/30,478.37 = 6,278.23/x
  3. Step 3: Cross multiply
    20,316.98x = 30,478.37 × 6,278.23
  4. Step 4: Simplify right side
    20,316.98x = 191,350,156.38
  5. Step 5: Solve for x
    x = 191,350,156.38/20,316.98
  6. Step 6: Final answer
    x = 9,418.24

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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.