Home / 13,810.50-20,712.47-3,815.03

Finding the Fourth Proportional to 13,810.50, 20,712.47 and 3,815.03

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Solution

The fourth proportional to 13,810.50, 20,712.47 and 3,815.03 is: 5,721.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,810.50 : 20,712.47 = 3,815.03 : x
  2. Step 2: Convert to fraction form
    13,810.50/20,712.47 = 3,815.03/x
  3. Step 3: Cross multiply
    13,810.50x = 20,712.47 × 3,815.03
  4. Step 4: Simplify right side
    13,810.50x = 79,018,670.92
  5. Step 5: Solve for x
    x = 79,018,670.92/13,810.50
  6. Step 6: Final answer
    x = 5,721.64

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1.5x scale

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.