Home / 13,320,289.05-18,381,998.72-7,208,717.55

Finding the Fourth Proportional to 13,320,289.05, 18,381,998.72 and 7,208,717.55

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Solution

The fourth proportional to 13,320,289.05, 18,381,998.72 and 7,208,717.55 is: 9,948,030.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,320,289.05 : 18,381,998.72 = 7,208,717.55 : x
  2. Step 2: Convert to fraction form
    13,320,289.05/18,381,998.72 = 7,208,717.55/x
  3. Step 3: Cross multiply
    13,320,289.05x = 18,381,998.72 × 7,208,717.55
  4. Step 4: Simplify right side
    13,320,289.05x = 132,510,636,740,897.94
  5. Step 5: Solve for x
    x = 132,510,636,740,897.94/13,320,289.05
  6. Step 6: Final answer
    x = 9,948,030.12

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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.