Home / 20,421,313.20-28,182,806.25-12,477,256.83

Finding the Fourth Proportional to 20,421,313.20, 28,182,806.25 and 12,477,256.83

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Solution

The fourth proportional to 20,421,313.20, 28,182,806.25 and 12,477,256.83 is: 17,219,466.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,421,313.20 : 28,182,806.25 = 12,477,256.83 : x
  2. Step 2: Convert to fraction form
    20,421,313.20/28,182,806.25 = 12,477,256.83/x
  3. Step 3: Cross multiply
    20,421,313.20x = 28,182,806.25 × 12,477,256.83
  4. Step 4: Simplify right side
    20,421,313.20x = 351,644,111,771,379.19
  5. Step 5: Solve for x
    x = 351,644,111,771,379.19/20,421,313.20
  6. Step 6: Final answer
    x = 17,219,466.17

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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.