Home / 30,215.10-45,322.65-20,701.65

Finding the Fourth Proportional to 30,215.10, 45,322.65 and 20,701.65

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Solution

The fourth proportional to 30,215.10, 45,322.65 and 20,701.65 is: 31,052.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,215.10 : 45,322.65 = 20,701.65 : x
  2. Step 2: Convert to fraction form
    30,215.10/45,322.65 = 20,701.65/x
  3. Step 3: Cross multiply
    30,215.10x = 45,322.65 × 20,701.65
  4. Step 4: Simplify right side
    30,215.10x = 938,253,637.37
  5. Step 5: Solve for x
    x = 938,253,637.37/30,215.10
  6. Step 6: Final answer
    x = 31,052.48

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Double scale
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Similar ratio
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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.