Home / 20,595.40-28,422.60-11,643.28

Finding the Fourth Proportional to 20,595.40, 28,422.60 and 11,643.28

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Solution

The fourth proportional to 20,595.40, 28,422.60 and 11,643.28 is: 16,068.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,595.40 : 28,422.60 = 11,643.28 : x
  2. Step 2: Convert to fraction form
    20,595.40/28,422.60 = 11,643.28/x
  3. Step 3: Cross multiply
    20,595.40x = 28,422.60 × 11,643.28
  4. Step 4: Simplify right side
    20,595.40x = 330,932,175.41
  5. Step 5: Solve for x
    x = 330,932,175.41/20,595.40
  6. Step 6: Final answer
    x = 16,068.26

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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.