Home / 30,278.34-45,417.76-10,556.86

Finding the Fourth Proportional to 30,278.34, 45,417.76 and 10,556.86

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Solution

The fourth proportional to 30,278.34, 45,417.76 and 10,556.86 is: 15,835.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,278.34 : 45,417.76 = 10,556.86 : x
  2. Step 2: Convert to fraction form
    30,278.34/45,417.76 = 10,556.86/x
  3. Step 3: Cross multiply
    30,278.34x = 45,417.76 × 10,556.86
  4. Step 4: Simplify right side
    30,278.34x = 479,468,933.83
  5. Step 5: Solve for x
    x = 479,468,933.83/30,278.34
  6. Step 6: Final answer
    x = 15,835.38

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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.