Home / 19,287,682.48-28,930,821.72-7,778,113.84

Finding the Fourth Proportional to 19,287,682.48, 28,930,821.72 and 7,778,113.84

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Solution

The fourth proportional to 19,287,682.48, 28,930,821.72 and 7,778,113.84 is: 11,666,887.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,287,682.48 : 28,930,821.72 = 7,778,113.84 : x
  2. Step 2: Convert to fraction form
    19,287,682.48/28,930,821.72 = 7,778,113.84/x
  3. Step 3: Cross multiply
    19,287,682.48x = 28,930,821.72 × 7,778,113.84
  4. Step 4: Simplify right side
    19,287,682.48x = 225,027,224,822,904.59
  5. Step 5: Solve for x
    x = 225,027,224,822,904.59/19,287,682.48
  6. Step 6: Final answer
    x = 11,666,887.67

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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.