Home / 28,085.83-38,758.51-15,339.11

Finding the Fourth Proportional to 28,085.83, 38,758.51 and 15,339.11

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Solution

The fourth proportional to 28,085.83, 38,758.51 and 15,339.11 is: 21,168.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,085.83 : 38,758.51 = 15,339.11 : x
  2. Step 2: Convert to fraction form
    28,085.83/38,758.51 = 15,339.11/x
  3. Step 3: Cross multiply
    28,085.83x = 38,758.51 × 15,339.11
  4. Step 4: Simplify right side
    28,085.83x = 594,521,091.72
  5. Step 5: Solve for x
    x = 594,521,091.72/28,085.83
  6. Step 6: Final answer
    x = 21,168.01

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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.