Home / 15,686,899.68-21,648,447.20-8,717,870.88

Finding the Fourth Proportional to 15,686,899.68, 21,648,447.20 and 8,717,870.88

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Solution

The fourth proportional to 15,686,899.68, 21,648,447.20 and 8,717,870.88 is: 12,030,953.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,686,899.68 : 21,648,447.20 = 8,717,870.88 : x
  2. Step 2: Convert to fraction form
    15,686,899.68/21,648,447.20 = 8,717,870.88/x
  3. Step 3: Cross multiply
    15,686,899.68x = 21,648,447.20 × 8,717,870.88
  4. Step 4: Simplify right side
    15,686,899.68x = 188,728,367,442,097.56
  5. Step 5: Solve for x
    x = 188,728,367,442,097.56/15,686,899.68
  6. Step 6: Final answer
    x = 12,030,953.94

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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.