Home / 20,712,666.96-28,572,974.64-15,809,376.51

Finding the Fourth Proportional to 20,712,666.96, 28,572,974.64 and 15,809,376.51

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Solution

The fourth proportional to 20,712,666.96, 28,572,974.64 and 15,809,376.51 is: 21,808,920.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,712,666.96 : 28,572,974.64 = 15,809,376.51 : x
  2. Step 2: Convert to fraction form
    20,712,666.96/28,572,974.64 = 15,809,376.51/x
  3. Step 3: Cross multiply
    20,712,666.96x = 28,572,974.64 × 15,809,376.51
  4. Step 4: Simplify right side
    20,712,666.96x = 451,720,914,094,441.69
  5. Step 5: Solve for x
    x = 451,720,914,094,441.69/20,712,666.96
  6. Step 6: Final answer
    x = 21,808,920.84

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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.