Home / 21,048.55-29,047.16-11,488.51

Finding the Fourth Proportional to 21,048.55, 29,047.16 and 11,488.51

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Solution

The fourth proportional to 21,048.55, 29,047.16 and 11,488.51 is: 15,854.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,048.55 : 29,047.16 = 11,488.51 : x
  2. Step 2: Convert to fraction form
    21,048.55/29,047.16 = 11,488.51/x
  3. Step 3: Cross multiply
    21,048.55x = 29,047.16 × 11,488.51
  4. Step 4: Simplify right side
    21,048.55x = 333,708,588.13
  5. Step 5: Solve for x
    x = 333,708,588.13/21,048.55
  6. Step 6: Final answer
    x = 15,854.23

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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.