Home / 41,970.18-62,915.70-20,890.31

Finding the Fourth Proportional to 41,970.18, 62,915.70 and 20,890.31

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Solution

The fourth proportional to 41,970.18, 62,915.70 and 20,890.31 is: 31,315.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    41,970.18 : 62,915.70 = 20,890.31 : x
  2. Step 2: Convert to fraction form
    41,970.18/62,915.70 = 20,890.31/x
  3. Step 3: Cross multiply
    41,970.18x = 62,915.70 × 20,890.31
  4. Step 4: Simplify right side
    41,970.18x = 1,314,328,240.63
  5. Step 5: Solve for x
    x = 1,314,328,240.63/41,970.18
  6. Step 6: Final answer
    x = 31,315.76

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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.