Home / 31,541.75-47,320.21-11,820.47

Finding the Fourth Proportional to 31,541.75, 47,320.21 and 11,820.47

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Solution

The fourth proportional to 31,541.75, 47,320.21 and 11,820.47 is: 17,733.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,541.75 : 47,320.21 = 11,820.47 : x
  2. Step 2: Convert to fraction form
    31,541.75/47,320.21 = 11,820.47/x
  3. Step 3: Cross multiply
    31,541.75x = 47,320.21 × 11,820.47
  4. Step 4: Simplify right side
    31,541.75x = 559,347,122.70
  5. Step 5: Solve for x
    x = 559,347,122.70/31,541.75
  6. Step 6: Final answer
    x = 17,733.55

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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.