Home / 30,512.02-42,126.17-20,948.83

Finding the Fourth Proportional to 30,512.02, 42,126.17 and 20,948.83

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Solution

The fourth proportional to 30,512.02, 42,126.17 and 20,948.83 is: 28,922.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,512.02 : 42,126.17 = 20,948.83 : x
  2. Step 2: Convert to fraction form
    30,512.02/42,126.17 = 20,948.83/x
  3. Step 3: Cross multiply
    30,512.02x = 42,126.17 × 20,948.83
  4. Step 4: Simplify right side
    30,512.02x = 882,493,973.88
  5. Step 5: Solve for x
    x = 882,493,973.88/30,512.02
  6. Step 6: Final answer
    x = 28,922.83

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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.