Home / 11,210.79-15,471.45-6,431.51

Finding the Fourth Proportional to 11,210.79, 15,471.45 and 6,431.51

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Solution

The fourth proportional to 11,210.79, 15,471.45 and 6,431.51 is: 8,875.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,210.79 : 15,471.45 = 6,431.51 : x
  2. Step 2: Convert to fraction form
    11,210.79/15,471.45 = 6,431.51/x
  3. Step 3: Cross multiply
    11,210.79x = 15,471.45 × 6,431.51
  4. Step 4: Simplify right side
    11,210.79x = 99,504,708.03
  5. Step 5: Solve for x
    x = 99,504,708.03/11,210.79
  6. Step 6: Final answer
    x = 8,875.80

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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.