Home / 28,111.64-42,167.47-11,479.51

Finding the Fourth Proportional to 28,111.64, 42,167.47 and 11,479.51

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Solution

The fourth proportional to 28,111.64, 42,167.47 and 11,479.51 is: 17,219.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,111.64 : 42,167.47 = 11,479.51 : x
  2. Step 2: Convert to fraction form
    28,111.64/42,167.47 = 11,479.51/x
  3. Step 3: Cross multiply
    28,111.64x = 42,167.47 × 11,479.51
  4. Step 4: Simplify right side
    28,111.64x = 484,061,759.42
  5. Step 5: Solve for x
    x = 484,061,759.42/28,111.64
  6. Step 6: Final answer
    x = 17,219.26

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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.