Home / 20,926,700.79-28,878,807.31-11,635,128.78

Finding the Fourth Proportional to 20,926,700.79, 28,878,807.31 and 11,635,128.78

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Solution

The fourth proportional to 20,926,700.79, 28,878,807.31 and 11,635,128.78 is: 16,056,455.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,926,700.79 : 28,878,807.31 = 11,635,128.78 : x
  2. Step 2: Convert to fraction form
    20,926,700.79/28,878,807.31 = 11,635,128.78/x
  3. Step 3: Cross multiply
    20,926,700.79x = 28,878,807.31 × 11,635,128.78
  4. Step 4: Simplify right side
    20,926,700.79x = 336,008,642,064,655.38
  5. Step 5: Solve for x
    x = 336,008,642,064,655.38/20,926,700.79
  6. Step 6: Final answer
    x = 16,056,455.60

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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.