Home / 30,437.76-45,655.83-13,785.78

Finding the Fourth Proportional to 30,437.76, 45,655.83 and 13,785.78

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Solution

The fourth proportional to 30,437.76, 45,655.83 and 13,785.78 is: 20,678.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,437.76 : 45,655.83 = 13,785.78 : x
  2. Step 2: Convert to fraction form
    30,437.76/45,655.83 = 13,785.78/x
  3. Step 3: Cross multiply
    30,437.76x = 45,655.83 × 13,785.78
  4. Step 4: Simplify right side
    30,437.76x = 629,401,228.10
  5. Step 5: Solve for x
    x = 629,401,228.10/30,437.76
  6. Step 6: Final answer
    x = 20,678.30

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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.