Home / 11,703.12-16,156.40-7,229.28

Finding the Fourth Proportional to 11,703.12, 16,156.40 and 7,229.28

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Solution

The fourth proportional to 11,703.12, 16,156.40 and 7,229.28 is: 9,980.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,703.12 : 16,156.40 = 7,229.28 : x
  2. Step 2: Convert to fraction form
    11,703.12/16,156.40 = 7,229.28/x
  3. Step 3: Cross multiply
    11,703.12x = 16,156.40 × 7,229.28
  4. Step 4: Simplify right side
    11,703.12x = 116,799,139.39
  5. Step 5: Solve for x
    x = 116,799,139.39/11,703.12
  6. Step 6: Final answer
    x = 9,980.17

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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.