Home / 21,313.98-29,412.71-12,360.91

Finding the Fourth Proportional to 21,313.98, 29,412.71 and 12,360.91

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Solution

The fourth proportional to 21,313.98, 29,412.71 and 12,360.91 is: 17,057.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,313.98 : 29,412.71 = 12,360.91 : x
  2. Step 2: Convert to fraction form
    21,313.98/29,412.71 = 12,360.91/x
  3. Step 3: Cross multiply
    21,313.98x = 29,412.71 × 12,360.91
  4. Step 4: Simplify right side
    21,313.98x = 363,567,861.17
  5. Step 5: Solve for x
    x = 363,567,861.17/21,313.98
  6. Step 6: Final answer
    x = 17,057.72

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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.