Home / 19,660.48-29,490.54-7,970.92

Finding the Fourth Proportional to 19,660.48, 29,490.54 and 7,970.92

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Solution

The fourth proportional to 19,660.48, 29,490.54 and 7,970.92 is: 11,956.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,660.48 : 29,490.54 = 7,970.92 : x
  2. Step 2: Convert to fraction form
    19,660.48/29,490.54 = 7,970.92/x
  3. Step 3: Cross multiply
    19,660.48x = 29,490.54 × 7,970.92
  4. Step 4: Simplify right side
    19,660.48x = 235,066,735.10
  5. Step 5: Solve for x
    x = 235,066,735.10/19,660.48
  6. Step 6: Final answer
    x = 11,956.31

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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.