Home / 28,485.87-42,699.64-14,419.81

Finding the Fourth Proportional to 28,485.87, 42,699.64 and 14,419.81

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Solution

The fourth proportional to 28,485.87, 42,699.64 and 14,419.81 is: 21,614.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,485.87 : 42,699.64 = 14,419.81 : x
  2. Step 2: Convert to fraction form
    28,485.87/42,699.64 = 14,419.81/x
  3. Step 3: Cross multiply
    28,485.87x = 42,699.64 × 14,419.81
  4. Step 4: Simplify right side
    28,485.87x = 615,720,695.87
  5. Step 5: Solve for x
    x = 615,720,695.87/28,485.87
  6. Step 6: Final answer
    x = 21,614.95

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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.