Home / 30,735.59-42,418.28-18,806.85

Finding the Fourth Proportional to 30,735.59, 42,418.28 and 18,806.85

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Solution

The fourth proportional to 30,735.59, 42,418.28 and 18,806.85 is: 25,955.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,735.59 : 42,418.28 = 18,806.85 : x
  2. Step 2: Convert to fraction form
    30,735.59/42,418.28 = 18,806.85/x
  3. Step 3: Cross multiply
    30,735.59x = 42,418.28 × 18,806.85
  4. Step 4: Simplify right side
    30,735.59x = 797,754,276.24
  5. Step 5: Solve for x
    x = 797,754,276.24/30,735.59
  6. Step 6: Final answer
    x = 25,955.40

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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.