Home / 20,547.86-30,820.77-5,756.45

Finding the Fourth Proportional to 20,547.86, 30,820.77 and 5,756.45

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Solution

The fourth proportional to 20,547.86, 30,820.77 and 5,756.45 is: 8,634.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,547.86 : 30,820.77 = 5,756.45 : x
  2. Step 2: Convert to fraction form
    20,547.86/30,820.77 = 5,756.45/x
  3. Step 3: Cross multiply
    20,547.86x = 30,820.77 × 5,756.45
  4. Step 4: Simplify right side
    20,547.86x = 177,418,067.36
  5. Step 5: Solve for x
    x = 177,418,067.36/20,547.86
  6. Step 6: Final answer
    x = 8,634.38

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.