Home / 20,328.90-30,482.51-10,327.49

Finding the Fourth Proportional to 20,328.90, 30,482.51 and 10,327.49

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Solution

The fourth proportional to 20,328.90, 30,482.51 and 10,327.49 is: 15,485.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,328.90 : 30,482.51 = 10,327.49 : x
  2. Step 2: Convert to fraction form
    20,328.90/30,482.51 = 10,327.49/x
  3. Step 3: Cross multiply
    20,328.90x = 30,482.51 × 10,327.49
  4. Step 4: Simplify right side
    20,328.90x = 314,807,613.15
  5. Step 5: Solve for x
    x = 314,807,613.15/20,328.90
  6. Step 6: Final answer
    x = 15,485.72

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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.