Home / 28,285.70-39,036.03-15,710.42

Finding the Fourth Proportional to 28,285.70, 39,036.03 and 15,710.42

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Solution

The fourth proportional to 28,285.70, 39,036.03 and 15,710.42 is: 21,681.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,285.70 : 39,036.03 = 15,710.42 : x
  2. Step 2: Convert to fraction form
    28,285.70/39,036.03 = 15,710.42/x
  3. Step 3: Cross multiply
    28,285.70x = 39,036.03 × 15,710.42
  4. Step 4: Simplify right side
    28,285.70x = 613,272,426.43
  5. Step 5: Solve for x
    x = 613,272,426.43/28,285.70
  6. Step 6: Final answer
    x = 21,681.36

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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.