Home / 30,702.28-42,368.23-18,609.92

Finding the Fourth Proportional to 30,702.28, 42,368.23 and 18,609.92

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Solution

The fourth proportional to 30,702.28, 42,368.23 and 18,609.92 is: 25,681.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,702.28 : 42,368.23 = 18,609.92 : x
  2. Step 2: Convert to fraction form
    30,702.28/42,368.23 = 18,609.92/x
  3. Step 3: Cross multiply
    30,702.28x = 42,368.23 × 18,609.92
  4. Step 4: Simplify right side
    30,702.28x = 788,469,370.84
  5. Step 5: Solve for x
    x = 788,469,370.84/30,702.28
  6. Step 6: Final answer
    x = 25,681.13

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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.