Home / 15,740.90-21,711.21-10,146.50

Finding the Fourth Proportional to 15,740.90, 21,711.21 and 10,146.50

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Solution

The fourth proportional to 15,740.90, 21,711.21 and 10,146.50 is: 13,994.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,740.90 : 21,711.21 = 10,146.50 : x
  2. Step 2: Convert to fraction form
    15,740.90/21,711.21 = 10,146.50/x
  3. Step 3: Cross multiply
    15,740.90x = 21,711.21 × 10,146.50
  4. Step 4: Simplify right side
    15,740.90x = 220,292,792.27
  5. Step 5: Solve for x
    x = 220,292,792.27/15,740.90
  6. Step 6: Final answer
    x = 13,994.93

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.