Home / 9,521.05-13,138.61-5,271.81

Finding the Fourth Proportional to 9,521.05, 13,138.61 and 5,271.81

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Solution

The fourth proportional to 9,521.05, 13,138.61 and 5,271.81 is: 7,274.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,521.05 : 13,138.61 = 5,271.81 : x
  2. Step 2: Convert to fraction form
    9,521.05/13,138.61 = 5,271.81/x
  3. Step 3: Cross multiply
    9,521.05x = 13,138.61 × 5,271.81
  4. Step 4: Simplify right side
    9,521.05x = 69,264,255.58
  5. Step 5: Solve for x
    x = 69,264,255.58/9,521.05
  6. Step 6: Final answer
    x = 7,274.85

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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.