Home / 30,139.34-45,208.41-9,362.78

Finding the Fourth Proportional to 30,139.34, 45,208.41 and 9,362.78

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Solution

The fourth proportional to 30,139.34, 45,208.41 and 9,362.78 is: 14,043.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,139.34 : 45,208.41 = 9,362.78 : x
  2. Step 2: Convert to fraction form
    30,139.34/45,208.41 = 9,362.78/x
  3. Step 3: Cross multiply
    30,139.34x = 45,208.41 × 9,362.78
  4. Step 4: Simplify right side
    30,139.34x = 423,276,396.98
  5. Step 5: Solve for x
    x = 423,276,396.98/30,139.34
  6. Step 6: Final answer
    x = 14,043.98

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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.