Home / 30,538.02-42,144.20-17,113.60

Finding the Fourth Proportional to 30,538.02, 42,144.20 and 17,113.60

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Solution

The fourth proportional to 30,538.02, 42,144.20 and 17,113.60 is: 23,617.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,538.02 : 42,144.20 = 17,113.60 : x
  2. Step 2: Convert to fraction form
    30,538.02/42,144.20 = 17,113.60/x
  3. Step 3: Cross multiply
    30,538.02x = 42,144.20 × 17,113.60
  4. Step 4: Simplify right side
    30,538.02x = 721,238,981.12
  5. Step 5: Solve for x
    x = 721,238,981.12/30,538.02
  6. Step 6: Final answer
    x = 23,617.74

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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.