Home / 19,930.79-29,840.82-10,040.08

Finding the Fourth Proportional to 19,930.79, 29,840.82 and 10,040.08

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Solution

The fourth proportional to 19,930.79, 29,840.82 and 10,040.08 is: 15,032.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,930.79 : 29,840.82 = 10,040.08 : x
  2. Step 2: Convert to fraction form
    19,930.79/29,840.82 = 10,040.08/x
  3. Step 3: Cross multiply
    19,930.79x = 29,840.82 × 10,040.08
  4. Step 4: Simplify right side
    19,930.79x = 299,604,220.07
  5. Step 5: Solve for x
    x = 299,604,220.07/19,930.79
  6. Step 6: Final answer
    x = 15,032.23

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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.