Home / 28,915.40-43,344.30-13,305.80

Finding the Fourth Proportional to 28,915.40, 43,344.30 and 13,305.80

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Solution

The fourth proportional to 28,915.40, 43,344.30 and 13,305.80 is: 19,945.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,915.40 : 43,344.30 = 13,305.80 : x
  2. Step 2: Convert to fraction form
    28,915.40/43,344.30 = 13,305.80/x
  3. Step 3: Cross multiply
    28,915.40x = 43,344.30 × 13,305.80
  4. Step 4: Simplify right side
    28,915.40x = 576,730,586.94
  5. Step 5: Solve for x
    x = 576,730,586.94/28,915.40
  6. Step 6: Final answer
    x = 19,945.45

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.