Home / 21,279.22-29,368.87-12,332.16

Finding the Fourth Proportional to 21,279.22, 29,368.87 and 12,332.16

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Solution

The fourth proportional to 21,279.22, 29,368.87 and 12,332.16 is: 17,020.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,279.22 : 29,368.87 = 12,332.16 : x
  2. Step 2: Convert to fraction form
    21,279.22/29,368.87 = 12,332.16/x
  3. Step 3: Cross multiply
    21,279.22x = 29,368.87 × 12,332.16
  4. Step 4: Simplify right side
    21,279.22x = 362,181,603.86
  5. Step 5: Solve for x
    x = 362,181,603.86/21,279.22
  6. Step 6: Final answer
    x = 17,020.44

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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.