Home / 11,931.12-17,746.47-11,891.16

Finding the Fourth Proportional to 11,931.12, 17,746.47 and 11,891.16

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Solution

The fourth proportional to 11,931.12, 17,746.47 and 11,891.16 is: 17,687.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,931.12 : 17,746.47 = 11,891.16 : x
  2. Step 2: Convert to fraction form
    11,931.12/17,746.47 = 11,891.16/x
  3. Step 3: Cross multiply
    11,931.12x = 17,746.47 × 11,891.16
  4. Step 4: Simplify right side
    11,931.12x = 211,026,114.21
  5. Step 5: Solve for x
    x = 211,026,114.21/11,931.12
  6. Step 6: Final answer
    x = 17,687.03

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.