Home / 28,166.24-38,870.02-15,590.98

Finding the Fourth Proportional to 28,166.24, 38,870.02 and 15,590.98

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Solution

The fourth proportional to 28,166.24, 38,870.02 and 15,590.98 is: 21,515.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,166.24 : 38,870.02 = 15,590.98 : x
  2. Step 2: Convert to fraction form
    28,166.24/38,870.02 = 15,590.98/x
  3. Step 3: Cross multiply
    28,166.24x = 38,870.02 × 15,590.98
  4. Step 4: Simplify right side
    28,166.24x = 606,021,704.42
  5. Step 5: Solve for x
    x = 606,021,704.42/28,166.24
  6. Step 6: Final answer
    x = 21,515.89

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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.