Home / 12,721.54-19,082.08-5,223.47

Finding the Fourth Proportional to 12,721.54, 19,082.08 and 5,223.47

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Solution

The fourth proportional to 12,721.54, 19,082.08 and 5,223.47 is: 7,835.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,721.54 : 19,082.08 = 5,223.47 : x
  2. Step 2: Convert to fraction form
    12,721.54/19,082.08 = 5,223.47/x
  3. Step 3: Cross multiply
    12,721.54x = 19,082.08 × 5,223.47
  4. Step 4: Simplify right side
    12,721.54x = 99,674,690.87
  5. Step 5: Solve for x
    x = 99,674,690.87/12,721.54
  6. Step 6: Final answer
    x = 7,835.11

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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.