Home / 13,768.65-20,727.90-12,543.93

Finding the Fourth Proportional to 13,768.65, 20,727.90 and 12,543.93

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Solution

The fourth proportional to 13,768.65, 20,727.90 and 12,543.93 is: 18,884.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,768.65 : 20,727.90 = 12,543.93 : x
  2. Step 2: Convert to fraction form
    13,768.65/20,727.90 = 12,543.93/x
  3. Step 3: Cross multiply
    13,768.65x = 20,727.90 × 12,543.93
  4. Step 4: Simplify right side
    13,768.65x = 260,009,326.65
  5. Step 5: Solve for x
    x = 260,009,326.65/13,768.65
  6. Step 6: Final answer
    x = 18,884.16

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.