Home / 31,709.20-43,780.08-28,341.22

Finding the Fourth Proportional to 31,709.20, 43,780.08 and 28,341.22

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Solution

The fourth proportional to 31,709.20, 43,780.08 and 28,341.22 is: 39,130.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,709.20 : 43,780.08 = 28,341.22 : x
  2. Step 2: Convert to fraction form
    31,709.20/43,780.08 = 28,341.22/x
  3. Step 3: Cross multiply
    31,709.20x = 43,780.08 × 28,341.22
  4. Step 4: Simplify right side
    31,709.20x = 1,240,780,878.90
  5. Step 5: Solve for x
    x = 1,240,780,878.90/31,709.20
  6. Step 6: Final answer
    x = 39,130.00

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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.