Home / 13,908.90-20,762.18-12,881.02

Finding the Fourth Proportional to 13,908.90, 20,762.18 and 12,881.02

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Solution

The fourth proportional to 13,908.90, 20,762.18 and 12,881.02 is: 19,227.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,908.90 : 20,762.18 = 12,881.02 : x
  2. Step 2: Convert to fraction form
    13,908.90/20,762.18 = 12,881.02/x
  3. Step 3: Cross multiply
    13,908.90x = 20,762.18 × 12,881.02
  4. Step 4: Simplify right side
    13,908.90x = 267,438,055.82
  5. Step 5: Solve for x
    x = 267,438,055.82/13,908.90
  6. Step 6: Final answer
    x = 19,227.84

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.