Home / 20,368.19-28,106.64-11,292.87

Finding the Fourth Proportional to 20,368.19, 28,106.64 and 11,292.87

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Solution

The fourth proportional to 20,368.19, 28,106.64 and 11,292.87 is: 15,583.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,368.19 : 28,106.64 = 11,292.87 : x
  2. Step 2: Convert to fraction form
    20,368.19/28,106.64 = 11,292.87/x
  3. Step 3: Cross multiply
    20,368.19x = 28,106.64 × 11,292.87
  4. Step 4: Simplify right side
    20,368.19x = 317,404,631.66
  5. Step 5: Solve for x
    x = 317,404,631.66/20,368.19
  6. Step 6: Final answer
    x = 15,583.35

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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.