Home / 18,756.06-28,109.48-13,802.51

Finding the Fourth Proportional to 18,756.06, 28,109.48 and 13,802.51

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Solution

The fourth proportional to 18,756.06, 28,109.48 and 13,802.51 is: 20,685.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,756.06 : 28,109.48 = 13,802.51 : x
  2. Step 2: Convert to fraction form
    18,756.06/28,109.48 = 13,802.51/x
  3. Step 3: Cross multiply
    18,756.06x = 28,109.48 × 13,802.51
  4. Step 4: Simplify right side
    18,756.06x = 387,981,378.79
  5. Step 5: Solve for x
    x = 387,981,378.79/18,756.06
  6. Step 6: Final answer
    x = 20,685.65

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.