Home / 25,860.86-35,690.08-15,109.20

Finding the Fourth Proportional to 25,860.86, 35,690.08 and 15,109.20

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Solution

The fourth proportional to 25,860.86, 35,690.08 and 15,109.20 is: 20,851.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,860.86 : 35,690.08 = 15,109.20 : x
  2. Step 2: Convert to fraction form
    25,860.86/35,690.08 = 15,109.20/x
  3. Step 3: Cross multiply
    25,860.86x = 35,690.08 × 15,109.20
  4. Step 4: Simplify right side
    25,860.86x = 539,248,556.74
  5. Step 5: Solve for x
    x = 539,248,556.74/25,860.86
  6. Step 6: Final answer
    x = 20,851.92

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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.