Home / 39,110.80-53,973.20-21,206.08

Finding the Fourth Proportional to 39,110.80, 53,973.20 and 21,206.08

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Solution

The fourth proportional to 39,110.80, 53,973.20 and 21,206.08 is: 29,264.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,110.80 : 53,973.20 = 21,206.08 : x
  2. Step 2: Convert to fraction form
    39,110.80/53,973.20 = 21,206.08/x
  3. Step 3: Cross multiply
    39,110.80x = 53,973.20 × 21,206.08
  4. Step 4: Simplify right side
    39,110.80x = 1,144,559,997.06
  5. Step 5: Solve for x
    x = 1,144,559,997.06/39,110.80
  6. Step 6: Final answer
    x = 29,264.55

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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.