Home / 39,415.23-54,392.88-21,510.39

Finding the Fourth Proportional to 39,415.23, 54,392.88 and 21,510.39

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Solution

The fourth proportional to 39,415.23, 54,392.88 and 21,510.39 is: 29,684.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,415.23 : 54,392.88 = 21,510.39 : x
  2. Step 2: Convert to fraction form
    39,415.23/54,392.88 = 21,510.39/x
  3. Step 3: Cross multiply
    39,415.23x = 54,392.88 × 21,510.39
  4. Step 4: Simplify right side
    39,415.23x = 1,170,012,062.02
  5. Step 5: Solve for x
    x = 1,170,012,062.02/39,415.23
  6. Step 6: Final answer
    x = 29,684.26

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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.