Home / 20,457,668.52-28,240,789.23-13,492,478.07

Finding the Fourth Proportional to 20,457,668.52, 28,240,789.23 and 13,492,478.07

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Solution

The fourth proportional to 20,457,668.52, 28,240,789.23 and 13,492,478.07 is: 18,625,691.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,457,668.52 : 28,240,789.23 = 13,492,478.07 : x
  2. Step 2: Convert to fraction form
    20,457,668.52/28,240,789.23 = 13,492,478.07/x
  3. Step 3: Cross multiply
    20,457,668.52x = 28,240,789.23 × 13,492,478.07
  4. Step 4: Simplify right side
    20,457,668.52x = 381,038,229,365,267.19
  5. Step 5: Solve for x
    x = 381,038,229,365,267.19/20,457,668.52
  6. Step 6: Final answer
    x = 18,625,691.83

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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.