Home / 39,110.75-53,973.02-21,205.70

Finding the Fourth Proportional to 39,110.75, 53,973.02 and 21,205.70

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Solution

The fourth proportional to 39,110.75, 53,973.02 and 21,205.70 is: 29,263.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,110.75 : 53,973.02 = 21,205.70 : x
  2. Step 2: Convert to fraction form
    39,110.75/53,973.02 = 21,205.70/x
  3. Step 3: Cross multiply
    39,110.75x = 53,973.02 × 21,205.70
  4. Step 4: Simplify right side
    39,110.75x = 1,144,535,670.21
  5. Step 5: Solve for x
    x = 1,144,535,670.21/39,110.75
  6. Step 6: Final answer
    x = 29,263.97

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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.