Home / 13,807.47-20,713.77-12,555.48

Finding the Fourth Proportional to 13,807.47, 20,713.77 and 12,555.48

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Solution

The fourth proportional to 13,807.47, 20,713.77 and 12,555.48 is: 18,835.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,807.47 : 20,713.77 = 12,555.48 : x
  2. Step 2: Convert to fraction form
    13,807.47/20,713.77 = 12,555.48/x
  3. Step 3: Cross multiply
    13,807.47x = 20,713.77 × 12,555.48
  4. Step 4: Simplify right side
    13,807.47x = 260,071,324.96
  5. Step 5: Solve for x
    x = 260,071,324.96/13,807.47
  6. Step 6: Final answer
    x = 18,835.55

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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.