Home / 15,712.61-23,572.40-5,185.89

Finding the Fourth Proportional to 15,712.61, 23,572.40 and 5,185.89

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Solution

The fourth proportional to 15,712.61, 23,572.40 and 5,185.89 is: 7,779.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,712.61 : 23,572.40 = 5,185.89 : x
  2. Step 2: Convert to fraction form
    15,712.61/23,572.40 = 5,185.89/x
  3. Step 3: Cross multiply
    15,712.61x = 23,572.40 × 5,185.89
  4. Step 4: Simplify right side
    15,712.61x = 122,243,847.51
  5. Step 5: Solve for x
    x = 122,243,847.51/15,712.61
  6. Step 6: Final answer
    x = 7,779.99

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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.