Home / 11,518.21-15,897.30-7,213.29

Finding the Fourth Proportional to 11,518.21, 15,897.30 and 7,213.29

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Solution

The fourth proportional to 11,518.21, 15,897.30 and 7,213.29 is: 9,955.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,518.21 : 15,897.30 = 7,213.29 : x
  2. Step 2: Convert to fraction form
    11,518.21/15,897.30 = 7,213.29/x
  3. Step 3: Cross multiply
    11,518.21x = 15,897.30 × 7,213.29
  4. Step 4: Simplify right side
    11,518.21x = 114,671,835.12
  5. Step 5: Solve for x
    x = 114,671,835.12/11,518.21
  6. Step 6: Final answer
    x = 9,955.70

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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.