Home / 39,870.42-59,811.09-11,792.68

Finding the Fourth Proportional to 39,870.42, 59,811.09 and 11,792.68

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Solution

The fourth proportional to 39,870.42, 59,811.09 and 11,792.68 is: 17,690.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,870.42 : 59,811.09 = 11,792.68 : x
  2. Step 2: Convert to fraction form
    39,870.42/59,811.09 = 11,792.68/x
  3. Step 3: Cross multiply
    39,870.42x = 59,811.09 × 11,792.68
  4. Step 4: Simplify right side
    39,870.42x = 705,333,044.82
  5. Step 5: Solve for x
    x = 705,333,044.82/39,870.42
  6. Step 6: Final answer
    x = 17,690.63

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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.