Home / 15,441.31-21,301.16-9,766.51

Finding the Fourth Proportional to 15,441.31, 21,301.16 and 9,766.51

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Solution

The fourth proportional to 15,441.31, 21,301.16 and 9,766.51 is: 13,472.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,441.31 : 21,301.16 = 9,766.51 : x
  2. Step 2: Convert to fraction form
    15,441.31/21,301.16 = 9,766.51/x
  3. Step 3: Cross multiply
    15,441.31x = 21,301.16 × 9,766.51
  4. Step 4: Simplify right side
    15,441.31x = 208,037,890.07
  5. Step 5: Solve for x
    x = 208,037,890.07/15,441.31
  6. Step 6: Final answer
    x = 13,472.81

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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.