Home / 39,320.60-54,261-21,415.23

Finding the Fourth Proportional to 39,320.60, 54,261 and 21,415.23

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Solution

The fourth proportional to 39,320.60, 54,261 and 21,415.23 is: 29,552.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,320.60 : 54,261 = 21,415.23 : x
  2. Step 2: Convert to fraction form
    39,320.60/54,261 = 21,415.23/x
  3. Step 3: Cross multiply
    39,320.60x = 54,261 × 21,415.23
  4. Step 4: Simplify right side
    39,320.60x = 1,162,011,795.03
  5. Step 5: Solve for x
    x = 1,162,011,795.03/39,320.60
  6. Step 6: Final answer
    x = 29,552.24

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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.