Home / 28,085.74-38,758.40-15,339.02

Finding the Fourth Proportional to 28,085.74, 38,758.40 and 15,339.02

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Solution

The fourth proportional to 28,085.74, 38,758.40 and 15,339.02 is: 21,167.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,085.74 : 38,758.40 = 15,339.02 : x
  2. Step 2: Convert to fraction form
    28,085.74/38,758.40 = 15,339.02/x
  3. Step 3: Cross multiply
    28,085.74x = 38,758.40 × 15,339.02
  4. Step 4: Simplify right side
    28,085.74x = 594,515,872.77
  5. Step 5: Solve for x
    x = 594,515,872.77/28,085.74
  6. Step 6: Final answer
    x = 21,167.89

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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.