Home / 28,988.88-40,000.84-18,359.76

Finding the Fourth Proportional to 28,988.88, 40,000.84 and 18,359.76

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Solution

The fourth proportional to 28,988.88, 40,000.84 and 18,359.76 is: 25,334.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,988.88 : 40,000.84 = 18,359.76 : x
  2. Step 2: Convert to fraction form
    28,988.88/40,000.84 = 18,359.76/x
  3. Step 3: Cross multiply
    28,988.88x = 40,000.84 × 18,359.76
  4. Step 4: Simplify right side
    28,988.88x = 734,405,822.20
  5. Step 5: Solve for x
    x = 734,405,822.20/28,988.88
  6. Step 6: Final answer
    x = 25,334.05

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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.