Home / 20,712,668.96-28,572,977.40-15,809,378.51

Finding the Fourth Proportional to 20,712,668.96, 28,572,977.40 and 15,809,378.51

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Solution

The fourth proportional to 20,712,668.96, 28,572,977.40 and 15,809,378.51 is: 21,808,923.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,712,668.96 : 28,572,977.40 = 15,809,378.51 : x
  2. Step 2: Convert to fraction form
    20,712,668.96/28,572,977.40 = 15,809,378.51/x
  3. Step 3: Cross multiply
    20,712,668.96x = 28,572,977.40 × 15,809,378.51
  4. Step 4: Simplify right side
    20,712,668.96x = 451,721,014,874,275.62
  5. Step 5: Solve for x
    x = 451,721,014,874,275.62/20,712,668.96
  6. Step 6: Final answer
    x = 21,808,923.60

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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.