Home / 42,268.18-63,393.09-12,678.07

Finding the Fourth Proportional to 42,268.18, 63,393.09 and 12,678.07

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Solution

The fourth proportional to 42,268.18, 63,393.09 and 12,678.07 is: 19,014.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,268.18 : 63,393.09 = 12,678.07 : x
  2. Step 2: Convert to fraction form
    42,268.18/63,393.09 = 12,678.07/x
  3. Step 3: Cross multiply
    42,268.18x = 63,393.09 × 12,678.07
  4. Step 4: Simplify right side
    42,268.18x = 803,702,032.54
  5. Step 5: Solve for x
    x = 803,702,032.54/42,268.18
  6. Step 6: Final answer
    x = 19,014.35

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1.5x scale

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.