Home / 20,617,322.96-28,466,139.48-12,885,840.56

Finding the Fourth Proportional to 20,617,322.96, 28,466,139.48 and 12,885,840.56

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Solution

The fourth proportional to 20,617,322.96, 28,466,139.48 and 12,885,840.56 is: 17,791,356.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,617,322.96 : 28,466,139.48 = 12,885,840.56 : x
  2. Step 2: Convert to fraction form
    20,617,322.96/28,466,139.48 = 12,885,840.56/x
  3. Step 3: Cross multiply
    20,617,322.96x = 28,466,139.48 × 12,885,840.56
  4. Step 4: Simplify right side
    20,617,322.96x = 366,810,134,698,001.31
  5. Step 5: Solve for x
    x = 366,810,134,698,001.31/20,617,322.96
  6. Step 6: Final answer
    x = 17,791,356.10

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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.