Home / 15,307.80-21,126.18-8,933.91

Finding the Fourth Proportional to 15,307.80, 21,126.18 and 8,933.91

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Solution

The fourth proportional to 15,307.80, 21,126.18 and 8,933.91 is: 12,329.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,307.80 : 21,126.18 = 8,933.91 : x
  2. Step 2: Convert to fraction form
    15,307.80/21,126.18 = 8,933.91/x
  3. Step 3: Cross multiply
    15,307.80x = 21,126.18 × 8,933.91
  4. Step 4: Simplify right side
    15,307.80x = 188,739,390.76
  5. Step 5: Solve for x
    x = 188,739,390.76/15,307.80
  6. Step 6: Final answer
    x = 12,329.62

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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.