Home / 31,387.45-47,075.96-10,327.75

Finding the Fourth Proportional to 31,387.45, 47,075.96 and 10,327.75

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Solution

The fourth proportional to 31,387.45, 47,075.96 and 10,327.75 is: 15,489.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,387.45 : 47,075.96 = 10,327.75 : x
  2. Step 2: Convert to fraction form
    31,387.45/47,075.96 = 10,327.75/x
  3. Step 3: Cross multiply
    31,387.45x = 47,075.96 × 10,327.75
  4. Step 4: Simplify right side
    31,387.45x = 486,188,510.51
  5. Step 5: Solve for x
    x = 486,188,510.51/31,387.45
  6. Step 6: Final answer
    x = 15,489.90

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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.