Home / 21,091.65-29,111.13-13,433.37

Finding the Fourth Proportional to 21,091.65, 29,111.13 and 13,433.37

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Solution

The fourth proportional to 21,091.65, 29,111.13 and 13,433.37 is: 18,541.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,091.65 : 29,111.13 = 13,433.37 : x
  2. Step 2: Convert to fraction form
    21,091.65/29,111.13 = 13,433.37/x
  3. Step 3: Cross multiply
    21,091.65x = 29,111.13 × 13,433.37
  4. Step 4: Simplify right side
    21,091.65x = 391,060,580.41
  5. Step 5: Solve for x
    x = 391,060,580.41/21,091.65
  6. Step 6: Final answer
    x = 18,541.01

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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.