Home / 20,530.80-30,740.04-14,277.60

Finding the Fourth Proportional to 20,530.80, 30,740.04 and 14,277.60

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Solution

The fourth proportional to 20,530.80, 30,740.04 and 14,277.60 is: 21,377.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,530.80 : 30,740.04 = 14,277.60 : x
  2. Step 2: Convert to fraction form
    20,530.80/30,740.04 = 14,277.60/x
  3. Step 3: Cross multiply
    20,530.80x = 30,740.04 × 14,277.60
  4. Step 4: Simplify right side
    20,530.80x = 438,893,995.10
  5. Step 5: Solve for x
    x = 438,893,995.10/20,530.80
  6. Step 6: Final answer
    x = 21,377.35

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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.