Home / 11,386.40-15,714.36-6,909.80

Finding the Fourth Proportional to 11,386.40, 15,714.36 and 6,909.80

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Solution

The fourth proportional to 11,386.40, 15,714.36 and 6,909.80 is: 9,536.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,386.40 : 15,714.36 = 6,909.80 : x
  2. Step 2: Convert to fraction form
    11,386.40/15,714.36 = 6,909.80/x
  3. Step 3: Cross multiply
    11,386.40x = 15,714.36 × 6,909.80
  4. Step 4: Simplify right side
    11,386.40x = 108,583,006.16
  5. Step 5: Solve for x
    x = 108,583,006.16/11,386.40
  6. Step 6: Final answer
    x = 9,536.21

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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.