Home / 21,106,053.19-31,664,538.07-12,359,718.19

Finding the Fourth Proportional to 21,106,053.19, 31,664,538.07 and 12,359,718.19

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Solution

The fourth proportional to 21,106,053.19, 31,664,538.07 and 12,359,718.19 is: 18,542,773.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,106,053.19 : 31,664,538.07 = 12,359,718.19 : x
  2. Step 2: Convert to fraction form
    21,106,053.19/31,664,538.07 = 12,359,718.19/x
  3. Step 3: Cross multiply
    21,106,053.19x = 31,664,538.07 × 12,359,718.19
  4. Step 4: Simplify right side
    21,106,053.19x = 391,364,767,098,014.81
  5. Step 5: Solve for x
    x = 391,364,767,098,014.81/21,106,053.19
  6. Step 6: Final answer
    x = 18,542,773.66

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.