Home / 31,381.40-47,075.06-10,321.61

Finding the Fourth Proportional to 31,381.40, 47,075.06 and 10,321.61

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Solution

The fourth proportional to 31,381.40, 47,075.06 and 10,321.61 is: 15,483.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,381.40 : 47,075.06 = 10,321.61 : x
  2. Step 2: Convert to fraction form
    31,381.40/47,075.06 = 10,321.61/x
  3. Step 3: Cross multiply
    31,381.40x = 47,075.06 × 10,321.61
  4. Step 4: Simplify right side
    31,381.40x = 485,890,649.36
  5. Step 5: Solve for x
    x = 485,890,649.36/31,381.40
  6. Step 6: Final answer
    x = 15,483.40

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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.