Home / 21,127,160.88-29,143,566.72-12,305,572.38

Finding the Fourth Proportional to 21,127,160.88, 29,143,566.72 and 12,305,572.38

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Solution

The fourth proportional to 21,127,160.88, 29,143,566.72 and 12,305,572.38 is: 16,974,749.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,127,160.88 : 29,143,566.72 = 12,305,572.38 : x
  2. Step 2: Convert to fraction form
    21,127,160.88/29,143,566.72 = 12,305,572.38/x
  3. Step 3: Cross multiply
    21,127,160.88x = 29,143,566.72 × 12,305,572.38
  4. Step 4: Simplify right side
    21,127,160.88x = 358,628,269,684,319.19
  5. Step 5: Solve for x
    x = 358,628,269,684,319.19/21,127,160.88
  6. Step 6: Final answer
    x = 16,974,749.79

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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.