Home / 39,970.65-59,958.58-13,315.51

Finding the Fourth Proportional to 39,970.65, 59,958.58 and 13,315.51

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Solution

The fourth proportional to 39,970.65, 59,958.58 and 13,315.51 is: 19,974.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,970.65 : 59,958.58 = 13,315.51 : x
  2. Step 2: Convert to fraction form
    39,970.65/59,958.58 = 13,315.51/x
  3. Step 3: Cross multiply
    39,970.65x = 59,958.58 × 13,315.51
  4. Step 4: Simplify right side
    39,970.65x = 798,379,071.58
  5. Step 5: Solve for x
    x = 798,379,071.58/39,970.65
  6. Step 6: Final answer
    x = 19,974.13

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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.