Home / 28,987.95-43,494.30-12,355.81

Finding the Fourth Proportional to 28,987.95, 43,494.30 and 12,355.81

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Solution

The fourth proportional to 28,987.95, 43,494.30 and 12,355.81 is: 18,538.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,987.95 : 43,494.30 = 12,355.81 : x
  2. Step 2: Convert to fraction form
    28,987.95/43,494.30 = 12,355.81/x
  3. Step 3: Cross multiply
    28,987.95x = 43,494.30 × 12,355.81
  4. Step 4: Simplify right side
    28,987.95x = 537,407,306.88
  5. Step 5: Solve for x
    x = 537,407,306.88/28,987.95
  6. Step 6: Final answer
    x = 18,538.99

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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.