Home / 20,967.04-31,455.42-9,280.36

Finding the Fourth Proportional to 20,967.04, 31,455.42 and 9,280.36

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Solution

The fourth proportional to 20,967.04, 31,455.42 and 9,280.36 is: 13,922.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,967.04 : 31,455.42 = 9,280.36 : x
  2. Step 2: Convert to fraction form
    20,967.04/31,455.42 = 9,280.36/x
  3. Step 3: Cross multiply
    20,967.04x = 31,455.42 × 9,280.36
  4. Step 4: Simplify right side
    20,967.04x = 291,917,621.55
  5. Step 5: Solve for x
    x = 291,917,621.55/20,967.04
  6. Step 6: Final answer
    x = 13,922.69

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.