Home / 30,278.19-45,417.57-10,556.73

Finding the Fourth Proportional to 30,278.19, 45,417.57 and 10,556.73

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Solution

The fourth proportional to 30,278.19, 45,417.57 and 10,556.73 is: 15,835.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,278.19 : 45,417.57 = 10,556.73 : x
  2. Step 2: Convert to fraction form
    30,278.19/45,417.57 = 10,556.73/x
  3. Step 3: Cross multiply
    30,278.19x = 45,417.57 × 10,556.73
  4. Step 4: Simplify right side
    30,278.19x = 479,461,023.75
  5. Step 5: Solve for x
    x = 479,461,023.75/30,278.19
  6. Step 6: Final answer
    x = 15,835.19

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Double scale
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Similar ratio
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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.