Home / 21,291.99-29,382.51-12,339.26

Finding the Fourth Proportional to 21,291.99, 29,382.51 and 12,339.26

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Solution

The fourth proportional to 21,291.99, 29,382.51 and 12,339.26 is: 17,027.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,291.99 : 29,382.51 = 12,339.26 : x
  2. Step 2: Convert to fraction form
    21,291.99/29,382.51 = 12,339.26/x
  3. Step 3: Cross multiply
    21,291.99x = 29,382.51 × 12,339.26
  4. Step 4: Simplify right side
    21,291.99x = 362,558,430.34
  5. Step 5: Solve for x
    x = 362,558,430.34/21,291.99
  6. Step 6: Final answer
    x = 17,027.93

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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.