Home / 42,640.09-63,960.29-13,057.80

Finding the Fourth Proportional to 42,640.09, 63,960.29 and 13,057.80

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Solution

The fourth proportional to 42,640.09, 63,960.29 and 13,057.80 is: 19,586.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,640.09 : 63,960.29 = 13,057.80 : x
  2. Step 2: Convert to fraction form
    42,640.09/63,960.29 = 13,057.80/x
  3. Step 3: Cross multiply
    42,640.09x = 63,960.29 × 13,057.80
  4. Step 4: Simplify right side
    42,640.09x = 835,180,674.76
  5. Step 5: Solve for x
    x = 835,180,674.76/42,640.09
  6. Step 6: Final answer
    x = 19,586.75

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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.