Home / 20,435.49-30,652.38-7,111.53

Finding the Fourth Proportional to 20,435.49, 30,652.38 and 7,111.53

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Solution

The fourth proportional to 20,435.49, 30,652.38 and 7,111.53 is: 10,667.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,435.49 : 30,652.38 = 7,111.53 : x
  2. Step 2: Convert to fraction form
    20,435.49/30,652.38 = 7,111.53/x
  3. Step 3: Cross multiply
    20,435.49x = 30,652.38 × 7,111.53
  4. Step 4: Simplify right side
    20,435.49x = 217,985,319.94
  5. Step 5: Solve for x
    x = 217,985,319.94/20,435.49
  6. Step 6: Final answer
    x = 10,667.00

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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.