Home / 39,657.13-54,727.47-21,751.81

Finding the Fourth Proportional to 39,657.13, 54,727.47 and 21,751.81

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Solution

The fourth proportional to 39,657.13, 54,727.47 and 21,751.81 is: 30,017.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,657.13 : 54,727.47 = 21,751.81 : x
  2. Step 2: Convert to fraction form
    39,657.13/54,727.47 = 21,751.81/x
  3. Step 3: Cross multiply
    39,657.13x = 54,727.47 × 21,751.81
  4. Step 4: Simplify right side
    39,657.13x = 1,190,421,392.40
  5. Step 5: Solve for x
    x = 1,190,421,392.40/39,657.13
  6. Step 6: Final answer
    x = 30,017.84

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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.