Home / 20,690.88-31,038.28-5,901.90

Finding the Fourth Proportional to 20,690.88, 31,038.28 and 5,901.90

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Solution

The fourth proportional to 20,690.88, 31,038.28 and 5,901.90 is: 8,853.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,690.88 : 31,038.28 = 5,901.90 : x
  2. Step 2: Convert to fraction form
    20,690.88/31,038.28 = 5,901.90/x
  3. Step 3: Cross multiply
    20,690.88x = 31,038.28 × 5,901.90
  4. Step 4: Simplify right side
    20,690.88x = 183,184,824.73
  5. Step 5: Solve for x
    x = 183,184,824.73/20,690.88
  6. Step 6: Final answer
    x = 8,853.41

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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.