Home / 11,113.56-15,336.08-6,515.72

Finding the Fourth Proportional to 11,113.56, 15,336.08 and 6,515.72

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Solution

The fourth proportional to 11,113.56, 15,336.08 and 6,515.72 is: 8,991.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,113.56 : 15,336.08 = 6,515.72 : x
  2. Step 2: Convert to fraction form
    11,113.56/15,336.08 = 6,515.72/x
  3. Step 3: Cross multiply
    11,113.56x = 15,336.08 × 6,515.72
  4. Step 4: Simplify right side
    11,113.56x = 99,925,603.18
  5. Step 5: Solve for x
    x = 99,925,603.18/11,113.56
  6. Step 6: Final answer
    x = 8,991.32

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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.