Home / 15,561.95-21,475.67-8,488.49

Finding the Fourth Proportional to 15,561.95, 21,475.67 and 8,488.49

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Solution

The fourth proportional to 15,561.95, 21,475.67 and 8,488.49 is: 11,714.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,561.95 : 21,475.67 = 8,488.49 : x
  2. Step 2: Convert to fraction form
    15,561.95/21,475.67 = 8,488.49/x
  3. Step 3: Cross multiply
    15,561.95x = 21,475.67 × 8,488.49
  4. Step 4: Simplify right side
    15,561.95x = 182,295,860.22
  5. Step 5: Solve for x
    x = 182,295,860.22/15,561.95
  6. Step 6: Final answer
    x = 11,714.21

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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.