Home / 30,145.31-45,224.44-10,156.78

Finding the Fourth Proportional to 30,145.31, 45,224.44 and 10,156.78

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Solution

The fourth proportional to 30,145.31, 45,224.44 and 10,156.78 is: 15,237.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,145.31 : 45,224.44 = 10,156.78 : x
  2. Step 2: Convert to fraction form
    30,145.31/45,224.44 = 10,156.78/x
  3. Step 3: Cross multiply
    30,145.31x = 45,224.44 × 10,156.78
  4. Step 4: Simplify right side
    30,145.31x = 459,334,718.84
  5. Step 5: Solve for x
    x = 459,334,718.84/30,145.31
  6. Step 6: Final answer
    x = 15,237.36

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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.