Home / 20,391,494.51-28,120,701.81-13,700,957.17

Finding the Fourth Proportional to 20,391,494.51, 28,120,701.81 and 13,700,957.17

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Solution

The fourth proportional to 20,391,494.51, 28,120,701.81 and 13,700,957.17 is: 18,894,178.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,391,494.51 : 28,120,701.81 = 13,700,957.17 : x
  2. Step 2: Convert to fraction form
    20,391,494.51/28,120,701.81 = 13,700,957.17/x
  3. Step 3: Cross multiply
    20,391,494.51x = 28,120,701.81 × 13,700,957.17
  4. Step 4: Simplify right side
    20,391,494.51x = 385,280,531,089,151.44
  5. Step 5: Solve for x
    x = 385,280,531,089,151.44/20,391,494.51
  6. Step 6: Final answer
    x = 18,894,178.20

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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.