Home / 28,736,072.82-39,688,769.21-20,930,360.91

Finding the Fourth Proportional to 28,736,072.82, 39,688,769.21 and 20,930,360.91

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Solution

The fourth proportional to 28,736,072.82, 39,688,769.21 and 20,930,360.91 is: 28,907,925.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,736,072.82 : 39,688,769.21 = 20,930,360.91 : x
  2. Step 2: Convert to fraction form
    28,736,072.82/39,688,769.21 = 20,930,360.91/x
  3. Step 3: Cross multiply
    28,736,072.82x = 39,688,769.21 × 20,930,360.91
  4. Step 4: Simplify right side
    28,736,072.82x = 830,700,263,385,510.88
  5. Step 5: Solve for x
    x = 830,700,263,385,510.88/28,736,072.82
  6. Step 6: Final answer
    x = 28,907,925.89

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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.