Home / 30,519.48-42,121.16-22,049.01

Finding the Fourth Proportional to 30,519.48, 42,121.16 and 22,049.01

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Solution

The fourth proportional to 30,519.48, 42,121.16 and 22,049.01 is: 30,430.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,519.48 : 42,121.16 = 22,049.01 : x
  2. Step 2: Convert to fraction form
    30,519.48/42,121.16 = 22,049.01/x
  3. Step 3: Cross multiply
    30,519.48x = 42,121.16 × 22,049.01
  4. Step 4: Simplify right side
    30,519.48x = 928,729,767.81
  5. Step 5: Solve for x
    x = 928,729,767.81/30,519.48
  6. Step 6: Final answer
    x = 30,430.72

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.