Home / 26,615.10-39,915.84-7,890.76

Finding the Fourth Proportional to 26,615.10, 39,915.84 and 7,890.76

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Solution

The fourth proportional to 26,615.10, 39,915.84 and 7,890.76 is: 11,834.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,615.10 : 39,915.84 = 7,890.76 : x
  2. Step 2: Convert to fraction form
    26,615.10/39,915.84 = 7,890.76/x
  3. Step 3: Cross multiply
    26,615.10x = 39,915.84 × 7,890.76
  4. Step 4: Simplify right side
    26,615.10x = 314,966,348.74
  5. Step 5: Solve for x
    x = 314,966,348.74/26,615.10
  6. Step 6: Final answer
    x = 11,834.12

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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.