Home / 30,541.14-42,144.48-18,603

Finding the Fourth Proportional to 30,541.14, 42,144.48 and 18,603

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Solution

The fourth proportional to 30,541.14, 42,144.48 and 18,603 is: 25,670.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,541.14 : 42,144.48 = 18,603 : x
  2. Step 2: Convert to fraction form
    30,541.14/42,144.48 = 18,603/x
  3. Step 3: Cross multiply
    30,541.14x = 42,144.48 × 18,603
  4. Step 4: Simplify right side
    30,541.14x = 784,013,761.44
  5. Step 5: Solve for x
    x = 784,013,761.44/30,541.14
  6. Step 6: Final answer
    x = 25,670.74

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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.