Home / 28,425.51-39,225.75-15,847.83

Finding the Fourth Proportional to 28,425.51, 39,225.75 and 15,847.83

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Solution

The fourth proportional to 28,425.51, 39,225.75 and 15,847.83 is: 21,869.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,425.51 : 39,225.75 = 15,847.83 : x
  2. Step 2: Convert to fraction form
    28,425.51/39,225.75 = 15,847.83/x
  3. Step 3: Cross multiply
    28,425.51x = 39,225.75 × 15,847.83
  4. Step 4: Simplify right side
    28,425.51x = 621,643,017.62
  5. Step 5: Solve for x
    x = 621,643,017.62/28,425.51
  6. Step 6: Final answer
    x = 21,869.19

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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.