Home / 28,187.12-42,277.32-7,412.24

Finding the Fourth Proportional to 28,187.12, 42,277.32 and 7,412.24

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Solution

The fourth proportional to 28,187.12, 42,277.32 and 7,412.24 is: 11,117.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,187.12 : 42,277.32 = 7,412.24 : x
  2. Step 2: Convert to fraction form
    28,187.12/42,277.32 = 7,412.24/x
  3. Step 3: Cross multiply
    28,187.12x = 42,277.32 × 7,412.24
  4. Step 4: Simplify right side
    28,187.12x = 313,369,642.40
  5. Step 5: Solve for x
    x = 313,369,642.40/28,187.12
  6. Step 6: Final answer
    x = 11,117.48

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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.