Home / 39,939.12-59,828.49-19,888.20

Finding the Fourth Proportional to 39,939.12, 59,828.49 and 19,888.20

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Solution

The fourth proportional to 39,939.12, 59,828.49 and 19,888.20 is: 29,792.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,939.12 : 59,828.49 = 19,888.20 : x
  2. Step 2: Convert to fraction form
    39,939.12/59,828.49 = 19,888.20/x
  3. Step 3: Cross multiply
    39,939.12x = 59,828.49 × 19,888.20
  4. Step 4: Simplify right side
    39,939.12x = 1,189,880,974.82
  5. Step 5: Solve for x
    x = 1,189,880,974.82/39,939.12
  6. Step 6: Final answer
    x = 29,792.37

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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.