Home / 10,015.20-13,810.52-8,603.50

Finding the Fourth Proportional to 10,015.20, 13,810.52 and 8,603.50

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Solution

The fourth proportional to 10,015.20, 13,810.52 and 8,603.50 is: 11,863.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,015.20 : 13,810.52 = 8,603.50 : x
  2. Step 2: Convert to fraction form
    10,015.20/13,810.52 = 8,603.50/x
  3. Step 3: Cross multiply
    10,015.20x = 13,810.52 × 8,603.50
  4. Step 4: Simplify right side
    10,015.20x = 118,818,808.82
  5. Step 5: Solve for x
    x = 118,818,808.82/10,015.20
  6. Step 6: Final answer
    x = 11,863.85

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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.