Home / 15,609.79-21,541.17-8,536.20

Finding the Fourth Proportional to 15,609.79, 21,541.17 and 8,536.20

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Solution

The fourth proportional to 15,609.79, 21,541.17 and 8,536.20 is: 11,779.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,609.79 : 21,541.17 = 8,536.20 : x
  2. Step 2: Convert to fraction form
    15,609.79/21,541.17 = 8,536.20/x
  3. Step 3: Cross multiply
    15,609.79x = 21,541.17 × 8,536.20
  4. Step 4: Simplify right side
    15,609.79x = 183,879,735.35
  5. Step 5: Solve for x
    x = 183,879,735.35/15,609.79
  6. Step 6: Final answer
    x = 11,779.77

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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.