Home / 20,223.59-27,915.87-12,265.64

Finding the Fourth Proportional to 20,223.59, 27,915.87 and 12,265.64

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Solution

The fourth proportional to 20,223.59, 27,915.87 and 12,265.64 is: 16,931.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,223.59 : 27,915.87 = 12,265.64 : x
  2. Step 2: Convert to fraction form
    20,223.59/27,915.87 = 12,265.64/x
  3. Step 3: Cross multiply
    20,223.59x = 27,915.87 × 12,265.64
  4. Step 4: Simplify right side
    20,223.59x = 342,406,022.81
  5. Step 5: Solve for x
    x = 342,406,022.81/20,223.59
  6. Step 6: Final answer
    x = 16,931.02

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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.