Home / 11,101.21-15,320.13-6,385.50

Finding the Fourth Proportional to 11,101.21, 15,320.13 and 6,385.50

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Solution

The fourth proportional to 11,101.21, 15,320.13 and 6,385.50 is: 8,812.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,101.21 : 15,320.13 = 6,385.50 : x
  2. Step 2: Convert to fraction form
    11,101.21/15,320.13 = 6,385.50/x
  3. Step 3: Cross multiply
    11,101.21x = 15,320.13 × 6,385.50
  4. Step 4: Simplify right side
    11,101.21x = 97,826,690.12
  5. Step 5: Solve for x
    x = 97,826,690.12/11,101.21
  6. Step 6: Final answer
    x = 8,812.25

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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.