Home / 11,307.10-15,616.57-7,715.91

Finding the Fourth Proportional to 11,307.10, 15,616.57 and 7,715.91

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Solution

The fourth proportional to 11,307.10, 15,616.57 and 7,715.91 is: 10,656.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,307.10 : 15,616.57 = 7,715.91 : x
  2. Step 2: Convert to fraction form
    11,307.10/15,616.57 = 7,715.91/x
  3. Step 3: Cross multiply
    11,307.10x = 15,616.57 × 7,715.91
  4. Step 4: Simplify right side
    11,307.10x = 120,496,048.63
  5. Step 5: Solve for x
    x = 120,496,048.63/11,307.10
  6. Step 6: Final answer
    x = 10,656.67

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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.