Home / 30,186.72-45,284.88-10,471.20

Finding the Fourth Proportional to 30,186.72, 45,284.88 and 10,471.20

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Solution

The fourth proportional to 30,186.72, 45,284.88 and 10,471.20 is: 15,708.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,186.72 : 45,284.88 = 10,471.20 : x
  2. Step 2: Convert to fraction form
    30,186.72/45,284.88 = 10,471.20/x
  3. Step 3: Cross multiply
    30,186.72x = 45,284.88 × 10,471.20
  4. Step 4: Simplify right side
    30,186.72x = 474,187,035.46
  5. Step 5: Solve for x
    x = 474,187,035.46/30,186.72
  6. Step 6: Final answer
    x = 15,708.47

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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.