Home / 28,320.13-42,421.86-16,605.10

Finding the Fourth Proportional to 28,320.13, 42,421.86 and 16,605.10

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Solution

The fourth proportional to 28,320.13, 42,421.86 and 16,605.10 is: 24,873.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,320.13 : 42,421.86 = 16,605.10 : x
  2. Step 2: Convert to fraction form
    28,320.13/42,421.86 = 16,605.10/x
  3. Step 3: Cross multiply
    28,320.13x = 42,421.86 × 16,605.10
  4. Step 4: Simplify right side
    28,320.13x = 704,419,227.49
  5. Step 5: Solve for x
    x = 704,419,227.49/28,320.13
  6. Step 6: Final answer
    x = 24,873.45

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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.