Home / 20,665.95-28,518.71-11,713.29

Finding the Fourth Proportional to 20,665.95, 28,518.71 and 11,713.29

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Solution

The fourth proportional to 20,665.95, 28,518.71 and 11,713.29 is: 16,164.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,665.95 : 28,518.71 = 11,713.29 : x
  2. Step 2: Convert to fraction form
    20,665.95/28,518.71 = 11,713.29/x
  3. Step 3: Cross multiply
    20,665.95x = 28,518.71 × 11,713.29
  4. Step 4: Simplify right side
    20,665.95x = 334,047,862.09
  5. Step 5: Solve for x
    x = 334,047,862.09/20,665.95
  6. Step 6: Final answer
    x = 16,164.17

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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.