Home / 14,820.21-20,440.08-12,589.47

Finding the Fourth Proportional to 14,820.21, 20,440.08 and 12,589.47

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Solution

The fourth proportional to 14,820.21, 20,440.08 and 12,589.47 is: 17,363.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,820.21 : 20,440.08 = 12,589.47 : x
  2. Step 2: Convert to fraction form
    14,820.21/20,440.08 = 12,589.47/x
  3. Step 3: Cross multiply
    14,820.21x = 20,440.08 × 12,589.47
  4. Step 4: Simplify right side
    14,820.21x = 257,329,773.96
  5. Step 5: Solve for x
    x = 257,329,773.96/14,820.21
  6. Step 6: Final answer
    x = 17,363.44

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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.