Home / 35,418.86-48,878.21-20,312.09

Finding the Fourth Proportional to 35,418.86, 48,878.21 and 20,312.09

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Solution

The fourth proportional to 35,418.86, 48,878.21 and 20,312.09 is: 28,030.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,418.86 : 48,878.21 = 20,312.09 : x
  2. Step 2: Convert to fraction form
    35,418.86/48,878.21 = 20,312.09/x
  3. Step 3: Cross multiply
    35,418.86x = 48,878.21 × 20,312.09
  4. Step 4: Simplify right side
    35,418.86x = 992,818,499.00
  5. Step 5: Solve for x
    x = 992,818,499.00/35,418.86
  6. Step 6: Final answer
    x = 28,030.79

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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.