Home / 21,680,060.55-29,918,631.15-11,890,574.79

Finding the Fourth Proportional to 21,680,060.55, 29,918,631.15 and 11,890,574.79

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Solution

The fourth proportional to 21,680,060.55, 29,918,631.15 and 11,890,574.79 is: 16,409,074.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,680,060.55 : 29,918,631.15 = 11,890,574.79 : x
  2. Step 2: Convert to fraction form
    21,680,060.55/29,918,631.15 = 11,890,574.79/x
  3. Step 3: Cross multiply
    21,680,060.55x = 29,918,631.15 × 11,890,574.79
  4. Step 4: Simplify right side
    21,680,060.55x = 355,749,721,303,498.69
  5. Step 5: Solve for x
    x = 355,749,721,303,498.69/21,680,060.55
  6. Step 6: Final answer
    x = 16,409,074.16

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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.