Home / 13,437.64-20,156.91-6,418.45

Finding the Fourth Proportional to 13,437.64, 20,156.91 and 6,418.45

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Solution

The fourth proportional to 13,437.64, 20,156.91 and 6,418.45 is: 9,627.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,437.64 : 20,156.91 = 6,418.45 : x
  2. Step 2: Convert to fraction form
    13,437.64/20,156.91 = 6,418.45/x
  3. Step 3: Cross multiply
    13,437.64x = 20,156.91 × 6,418.45
  4. Step 4: Simplify right side
    13,437.64x = 129,376,118.99
  5. Step 5: Solve for x
    x = 129,376,118.99/13,437.64
  6. Step 6: Final answer
    x = 9,627.89

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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.