Home / 28,669.80-39,565.65-15,923.05

Finding the Fourth Proportional to 28,669.80, 39,565.65 and 15,923.05

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Solution

The fourth proportional to 28,669.80, 39,565.65 and 15,923.05 is: 21,974.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,669.80 : 39,565.65 = 15,923.05 : x
  2. Step 2: Convert to fraction form
    28,669.80/39,565.65 = 15,923.05/x
  3. Step 3: Cross multiply
    28,669.80x = 39,565.65 × 15,923.05
  4. Step 4: Simplify right side
    28,669.80x = 630,005,784.03
  5. Step 5: Solve for x
    x = 630,005,784.03/28,669.80
  6. Step 6: Final answer
    x = 21,974.54

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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.