Home / 30,278.19-45,422.13-11,557.47

Finding the Fourth Proportional to 30,278.19, 45,422.13 and 11,557.47

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Solution

The fourth proportional to 30,278.19, 45,422.13 and 11,557.47 is: 17,338.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,278.19 : 45,422.13 = 11,557.47 : x
  2. Step 2: Convert to fraction form
    30,278.19/45,422.13 = 11,557.47/x
  3. Step 3: Cross multiply
    30,278.19x = 45,422.13 × 11,557.47
  4. Step 4: Simplify right side
    30,278.19x = 524,964,904.81
  5. Step 5: Solve for x
    x = 524,964,904.81/30,278.19
  6. Step 6: Final answer
    x = 17,338.05

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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.