Home / 42,853.10-64,321.11-20,682.08

Finding the Fourth Proportional to 42,853.10, 64,321.11 and 20,682.08

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Solution

The fourth proportional to 42,853.10, 64,321.11 and 20,682.08 is: 31,043.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,853.10 : 64,321.11 = 20,682.08 : x
  2. Step 2: Convert to fraction form
    42,853.10/64,321.11 = 20,682.08/x
  3. Step 3: Cross multiply
    42,853.10x = 64,321.11 × 20,682.08
  4. Step 4: Simplify right side
    42,853.10x = 1,330,294,451.81
  5. Step 5: Solve for x
    x = 1,330,294,451.81/42,853.10
  6. Step 6: Final answer
    x = 31,043.13

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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.