Home / 15,033.12-20,745.64-8,657.40

Finding the Fourth Proportional to 15,033.12, 20,745.64 and 8,657.40

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Solution

The fourth proportional to 15,033.12, 20,745.64 and 8,657.40 is: 11,947.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,033.12 : 20,745.64 = 8,657.40 : x
  2. Step 2: Convert to fraction form
    15,033.12/20,745.64 = 8,657.40/x
  3. Step 3: Cross multiply
    15,033.12x = 20,745.64 × 8,657.40
  4. Step 4: Simplify right side
    15,033.12x = 179,603,303.74
  5. Step 5: Solve for x
    x = 179,603,303.74/15,033.12
  6. Step 6: Final answer
    x = 11,947.17

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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.