Home / 39,970.96-59,956.40-11,890.90

Finding the Fourth Proportional to 39,970.96, 59,956.40 and 11,890.90

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Solution

The fourth proportional to 39,970.96, 59,956.40 and 11,890.90 is: 17,836.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,970.96 : 59,956.40 = 11,890.90 : x
  2. Step 2: Convert to fraction form
    39,970.96/59,956.40 = 11,890.90/x
  3. Step 3: Cross multiply
    39,970.96x = 59,956.40 × 11,890.90
  4. Step 4: Simplify right side
    39,970.96x = 712,935,556.76
  5. Step 5: Solve for x
    x = 712,935,556.76/39,970.96
  6. Step 6: Final answer
    x = 17,836.34

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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.