Home / 28,526.38-39,365.60-15,780.22

Finding the Fourth Proportional to 28,526.38, 39,365.60 and 15,780.22

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Solution

The fourth proportional to 28,526.38, 39,365.60 and 15,780.22 is: 21,776.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,526.38 : 39,365.60 = 15,780.22 : x
  2. Step 2: Convert to fraction form
    28,526.38/39,365.60 = 15,780.22/x
  3. Step 3: Cross multiply
    28,526.38x = 39,365.60 × 15,780.22
  4. Step 4: Simplify right side
    28,526.38x = 621,197,651.12
  5. Step 5: Solve for x
    x = 621,197,651.12/28,526.38
  6. Step 6: Final answer
    x = 21,776.25

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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.