Home / 20,266.91-27,968.81-12,713.55

Finding the Fourth Proportional to 20,266.91, 27,968.81 and 12,713.55

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Solution

The fourth proportional to 20,266.91, 27,968.81 and 12,713.55 is: 17,545.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,266.91 : 27,968.81 = 12,713.55 : x
  2. Step 2: Convert to fraction form
    20,266.91/27,968.81 = 12,713.55/x
  3. Step 3: Cross multiply
    20,266.91x = 27,968.81 × 12,713.55
  4. Step 4: Simplify right side
    20,266.91x = 355,582,800.81
  5. Step 5: Solve for x
    x = 355,582,800.81/20,266.91
  6. Step 6: Final answer
    x = 17,545.00

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1.5x scale

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.