Home / 28,089.05-38,782.40-22,735.31

Finding the Fourth Proportional to 28,089.05, 38,782.40 and 22,735.31

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Solution

The fourth proportional to 28,089.05, 38,782.40 and 22,735.31 is: 31,390.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,089.05 : 38,782.40 = 22,735.31 : x
  2. Step 2: Convert to fraction form
    28,089.05/38,782.40 = 22,735.31/x
  3. Step 3: Cross multiply
    28,089.05x = 38,782.40 × 22,735.31
  4. Step 4: Simplify right side
    28,089.05x = 881,729,869.82
  5. Step 5: Solve for x
    x = 881,729,869.82/28,089.05
  6. Step 6: Final answer
    x = 31,390.52

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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.