Home / 20,401.47-28,154.28-12,444.44

Finding the Fourth Proportional to 20,401.47, 28,154.28 and 12,444.44

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Solution

The fourth proportional to 20,401.47, 28,154.28 and 12,444.44 is: 17,173.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,401.47 : 28,154.28 = 12,444.44 : x
  2. Step 2: Convert to fraction form
    20,401.47/28,154.28 = 12,444.44/x
  3. Step 3: Cross multiply
    20,401.47x = 28,154.28 × 12,444.44
  4. Step 4: Simplify right side
    20,401.47x = 350,364,154.10
  5. Step 5: Solve for x
    x = 350,364,154.10/20,401.47
  6. Step 6: Final answer
    x = 17,173.48

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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.