Home / 30,218.13-45,342.54-13,574.79

Finding the Fourth Proportional to 30,218.13, 45,342.54 and 13,574.79

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Solution

The fourth proportional to 30,218.13, 45,342.54 and 13,574.79 is: 20,369.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,218.13 : 45,342.54 = 13,574.79 : x
  2. Step 2: Convert to fraction form
    30,218.13/45,342.54 = 13,574.79/x
  3. Step 3: Cross multiply
    30,218.13x = 45,342.54 × 13,574.79
  4. Step 4: Simplify right side
    30,218.13x = 615,515,458.57
  5. Step 5: Solve for x
    x = 615,515,458.57/30,218.13
  6. Step 6: Final answer
    x = 20,369.08

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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.