Home / 39,872.72-59,814.30-13,570.40

Finding the Fourth Proportional to 39,872.72, 59,814.30 and 13,570.40

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Solution

The fourth proportional to 39,872.72, 59,814.30 and 13,570.40 is: 20,357.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,872.72 : 59,814.30 = 13,570.40 : x
  2. Step 2: Convert to fraction form
    39,872.72/59,814.30 = 13,570.40/x
  3. Step 3: Cross multiply
    39,872.72x = 59,814.30 × 13,570.40
  4. Step 4: Simplify right side
    39,872.72x = 811,703,976.72
  5. Step 5: Solve for x
    x = 811,703,976.72/39,872.72
  6. Step 6: Final answer
    x = 20,357.38

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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.