Home / 39,646.16-54,709.80-21,737.84

Finding the Fourth Proportional to 39,646.16, 54,709.80 and 21,737.84

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Solution

The fourth proportional to 39,646.16, 54,709.80 and 21,737.84 is: 29,997.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,646.16 : 54,709.80 = 21,737.84 : x
  2. Step 2: Convert to fraction form
    39,646.16/54,709.80 = 21,737.84/x
  3. Step 3: Cross multiply
    39,646.16x = 54,709.80 × 21,737.84
  4. Step 4: Simplify right side
    39,646.16x = 1,189,272,878.83
  5. Step 5: Solve for x
    x = 1,189,272,878.83/39,646.16
  6. Step 6: Final answer
    x = 29,997.18

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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.