Home / 30,171.04-45,218.27-13,530.40

Finding the Fourth Proportional to 30,171.04, 45,218.27 and 13,530.40

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Solution

The fourth proportional to 30,171.04, 45,218.27 and 13,530.40 is: 20,278.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,171.04 : 45,218.27 = 13,530.40 : x
  2. Step 2: Convert to fraction form
    30,171.04/45,218.27 = 13,530.40/x
  3. Step 3: Cross multiply
    30,171.04x = 45,218.27 × 13,530.40
  4. Step 4: Simplify right side
    30,171.04x = 611,821,201.19
  5. Step 5: Solve for x
    x = 611,821,201.19/30,171.04
  6. Step 6: Final answer
    x = 20,278.43

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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.