Home / 11,031.71-15,223.38-6,315.08

Finding the Fourth Proportional to 11,031.71, 15,223.38 and 6,315.08

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Solution

The fourth proportional to 11,031.71, 15,223.38 and 6,315.08 is: 8,714.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,031.71 : 15,223.38 = 6,315.08 : x
  2. Step 2: Convert to fraction form
    11,031.71/15,223.38 = 6,315.08/x
  3. Step 3: Cross multiply
    11,031.71x = 15,223.38 × 6,315.08
  4. Step 4: Simplify right side
    11,031.71x = 96,136,840.30
  5. Step 5: Solve for x
    x = 96,136,840.30/11,031.71
  6. Step 6: Final answer
    x = 8,714.59

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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.