Home / 39,221.36-54,124.02-21,315.98

Finding the Fourth Proportional to 39,221.36, 54,124.02 and 21,315.98

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Solution

The fourth proportional to 39,221.36, 54,124.02 and 21,315.98 is: 29,415.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,221.36 : 54,124.02 = 21,315.98 : x
  2. Step 2: Convert to fraction form
    39,221.36/54,124.02 = 21,315.98/x
  3. Step 3: Cross multiply
    39,221.36x = 54,124.02 × 21,315.98
  4. Step 4: Simplify right side
    39,221.36x = 1,153,706,527.84
  5. Step 5: Solve for x
    x = 1,153,706,527.84/39,221.36
  6. Step 6: Final answer
    x = 29,415.26

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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.