Home / 21,293.08-29,368.38-20,037.40

Finding the Fourth Proportional to 21,293.08, 29,368.38 and 20,037.40

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Solution

The fourth proportional to 21,293.08, 29,368.38 and 20,037.40 is: 27,636.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,293.08 : 29,368.38 = 20,037.40 : x
  2. Step 2: Convert to fraction form
    21,293.08/29,368.38 = 20,037.40/x
  3. Step 3: Cross multiply
    21,293.08x = 29,368.38 × 20,037.40
  4. Step 4: Simplify right side
    21,293.08x = 588,465,977.41
  5. Step 5: Solve for x
    x = 588,465,977.41/21,293.08
  6. Step 6: Final answer
    x = 27,636.49

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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.