Home / 28,205,089.76-42,307,648.64-18,618,227.68

Finding the Fourth Proportional to 28,205,089.76, 42,307,648.64 and 18,618,227.68

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Solution

The fourth proportional to 28,205,089.76, 42,307,648.64 and 18,618,227.68 is: 27,927,350.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,205,089.76 : 42,307,648.64 = 18,618,227.68 : x
  2. Step 2: Convert to fraction form
    28,205,089.76/42,307,648.64 = 18,618,227.68/x
  3. Step 3: Cross multiply
    28,205,089.76x = 42,307,648.64 × 18,618,227.68
  4. Step 4: Simplify right side
    28,205,089.76x = 787,693,434,984,962.38
  5. Step 5: Solve for x
    x = 787,693,434,984,962.38/28,205,089.76
  6. Step 6: Final answer
    x = 27,927,350.76

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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.