Home / 29,899.71-40,962.80-28,778.67

Finding the Fourth Proportional to 29,899.71, 40,962.80 and 28,778.67

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Solution

The fourth proportional to 29,899.71, 40,962.80 and 28,778.67 is: 39,426.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,899.71 : 40,962.80 = 28,778.67 : x
  2. Step 2: Convert to fraction form
    29,899.71/40,962.80 = 28,778.67/x
  3. Step 3: Cross multiply
    29,899.71x = 40,962.80 × 28,778.67
  4. Step 4: Simplify right side
    29,899.71x = 1,178,854,759.58
  5. Step 5: Solve for x
    x = 1,178,854,759.58/29,899.71
  6. Step 6: Final answer
    x = 39,426.96

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.