Home / 15,518.64-21,417.30-9,147.22

Finding the Fourth Proportional to 15,518.64, 21,417.30 and 9,147.22

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Solution

The fourth proportional to 15,518.64, 21,417.30 and 9,147.22 is: 12,624.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,518.64 : 21,417.30 = 9,147.22 : x
  2. Step 2: Convert to fraction form
    15,518.64/21,417.30 = 9,147.22/x
  3. Step 3: Cross multiply
    15,518.64x = 21,417.30 × 9,147.22
  4. Step 4: Simplify right side
    15,518.64x = 195,908,754.91
  5. Step 5: Solve for x
    x = 195,908,754.91/15,518.64
  6. Step 6: Final answer
    x = 12,624.09

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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.