Home / 15,288.69-21,095.87-9,002.28

Finding the Fourth Proportional to 15,288.69, 21,095.87 and 9,002.28

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Solution

The fourth proportional to 15,288.69, 21,095.87 and 9,002.28 is: 12,421.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,288.69 : 21,095.87 = 9,002.28 : x
  2. Step 2: Convert to fraction form
    15,288.69/21,095.87 = 9,002.28/x
  3. Step 3: Cross multiply
    15,288.69x = 21,095.87 × 9,002.28
  4. Step 4: Simplify right side
    15,288.69x = 189,910,883.57
  5. Step 5: Solve for x
    x = 189,910,883.57/15,288.69
  6. Step 6: Final answer
    x = 12,421.66

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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.