Home / 18,117.12-25,050.96-15,784.32

Finding the Fourth Proportional to 18,117.12, 25,050.96 and 15,784.32

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Solution

The fourth proportional to 18,117.12, 25,050.96 and 15,784.32 is: 21,825.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,117.12 : 25,050.96 = 15,784.32 : x
  2. Step 2: Convert to fraction form
    18,117.12/25,050.96 = 15,784.32/x
  3. Step 3: Cross multiply
    18,117.12x = 25,050.96 × 15,784.32
  4. Step 4: Simplify right side
    18,117.12x = 395,412,368.95
  5. Step 5: Solve for x
    x = 395,412,368.95/18,117.12
  6. Step 6: Final answer
    x = 21,825.34

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.