Home / 30,447.24-42,001.38-20,364.36

Finding the Fourth Proportional to 30,447.24, 42,001.38 and 20,364.36

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Solution

The fourth proportional to 30,447.24, 42,001.38 and 20,364.36 is: 28,092.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,447.24 : 42,001.38 = 20,364.36 : x
  2. Step 2: Convert to fraction form
    30,447.24/42,001.38 = 20,364.36/x
  3. Step 3: Cross multiply
    30,447.24x = 42,001.38 × 20,364.36
  4. Step 4: Simplify right side
    30,447.24x = 855,331,222.82
  5. Step 5: Solve for x
    x = 855,331,222.82/30,447.24
  6. Step 6: Final answer
    x = 28,092.24

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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.