Home / 19,911.24-29,865.87-7,430.31

Finding the Fourth Proportional to 19,911.24, 29,865.87 and 7,430.31

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Solution

The fourth proportional to 19,911.24, 29,865.87 and 7,430.31 is: 11,145.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,911.24 : 29,865.87 = 7,430.31 : x
  2. Step 2: Convert to fraction form
    19,911.24/29,865.87 = 7,430.31/x
  3. Step 3: Cross multiply
    19,911.24x = 29,865.87 × 7,430.31
  4. Step 4: Simplify right side
    19,911.24x = 221,912,672.52
  5. Step 5: Solve for x
    x = 221,912,672.52/19,911.24
  6. Step 6: Final answer
    x = 11,145.10

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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.