Home / 28,514.51-42,741.70-11,857.77

Finding the Fourth Proportional to 28,514.51, 42,741.70 and 11,857.77

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Solution

The fourth proportional to 28,514.51, 42,741.70 and 11,857.77 is: 17,774.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,514.51 : 42,741.70 = 11,857.77 : x
  2. Step 2: Convert to fraction form
    28,514.51/42,741.70 = 11,857.77/x
  3. Step 3: Cross multiply
    28,514.51x = 42,741.70 × 11,857.77
  4. Step 4: Simplify right side
    28,514.51x = 506,821,378.65
  5. Step 5: Solve for x
    x = 506,821,378.65/28,514.51
  6. Step 6: Final answer
    x = 17,774.16

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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.