Home / 42,863.20-64,271.76-13,268.32

Finding the Fourth Proportional to 42,863.20, 64,271.76 and 13,268.32

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Solution

The fourth proportional to 42,863.20, 64,271.76 and 13,268.32 is: 19,895.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,863.20 : 64,271.76 = 13,268.32 : x
  2. Step 2: Convert to fraction form
    42,863.20/64,271.76 = 13,268.32/x
  3. Step 3: Cross multiply
    42,863.20x = 64,271.76 × 13,268.32
  4. Step 4: Simplify right side
    42,863.20x = 852,778,278.64
  5. Step 5: Solve for x
    x = 852,778,278.64/42,863.20
  6. Step 6: Final answer
    x = 19,895.35

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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.