Home / 39,415.88-54,393.72-21,510.74

Finding the Fourth Proportional to 39,415.88, 54,393.72 and 21,510.74

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Solution

The fourth proportional to 39,415.88, 54,393.72 and 21,510.74 is: 29,684.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,415.88 : 54,393.72 = 21,510.74 : x
  2. Step 2: Convert to fraction form
    39,415.88/54,393.72 = 21,510.74/x
  3. Step 3: Cross multiply
    39,415.88x = 54,393.72 × 21,510.74
  4. Step 4: Simplify right side
    39,415.88x = 1,170,049,168.55
  5. Step 5: Solve for x
    x = 1,170,049,168.55/39,415.88
  6. Step 6: Final answer
    x = 29,684.72

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.