Home / 10,197.20-14,071.36-5,720.40

Finding the Fourth Proportional to 10,197.20, 14,071.36 and 5,720.40

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Solution

The fourth proportional to 10,197.20, 14,071.36 and 5,720.40 is: 7,893.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,197.20 : 14,071.36 = 5,720.40 : x
  2. Step 2: Convert to fraction form
    10,197.20/14,071.36 = 5,720.40/x
  3. Step 3: Cross multiply
    10,197.20x = 14,071.36 × 5,720.40
  4. Step 4: Simplify right side
    10,197.20x = 80,493,807.74
  5. Step 5: Solve for x
    x = 80,493,807.74/10,197.20
  6. Step 6: Final answer
    x = 7,893.72

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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.