Home / 10,140.85-14,005.07-7,759.45

Finding the Fourth Proportional to 10,140.85, 14,005.07 and 7,759.45

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Solution

The fourth proportional to 10,140.85, 14,005.07 and 7,759.45 is: 10,716.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,140.85 : 14,005.07 = 7,759.45 : x
  2. Step 2: Convert to fraction form
    10,140.85/14,005.07 = 7,759.45/x
  3. Step 3: Cross multiply
    10,140.85x = 14,005.07 × 7,759.45
  4. Step 4: Simplify right side
    10,140.85x = 108,671,640.41
  5. Step 5: Solve for x
    x = 108,671,640.41/10,140.85
  6. Step 6: Final answer
    x = 10,716.23

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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.