Home / 10,071.08-15,102.36-5,390.09

Finding the Fourth Proportional to 10,071.08, 15,102.36 and 5,390.09

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Solution

The fourth proportional to 10,071.08, 15,102.36 and 5,390.09 is: 8,082.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,071.08 : 15,102.36 = 5,390.09 : x
  2. Step 2: Convert to fraction form
    10,071.08/15,102.36 = 5,390.09/x
  3. Step 3: Cross multiply
    10,071.08x = 15,102.36 × 5,390.09
  4. Step 4: Simplify right side
    10,071.08x = 81,403,004.10
  5. Step 5: Solve for x
    x = 81,403,004.10/10,071.08
  6. Step 6: Final answer
    x = 8,082.85

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.