Home / 11,971.16-16,521.02-7,931.02

Finding the Fourth Proportional to 11,971.16, 16,521.02 and 7,931.02

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Solution

The fourth proportional to 11,971.16, 16,521.02 and 7,931.02 is: 10,945.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,971.16 : 16,521.02 = 7,931.02 : x
  2. Step 2: Convert to fraction form
    11,971.16/16,521.02 = 7,931.02/x
  3. Step 3: Cross multiply
    11,971.16x = 16,521.02 × 7,931.02
  4. Step 4: Simplify right side
    11,971.16x = 131,028,459.08
  5. Step 5: Solve for x
    x = 131,028,459.08/11,971.16
  6. Step 6: Final answer
    x = 10,945.34

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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.