Home / 21,460.47-29,613.49-11,900.31

Finding the Fourth Proportional to 21,460.47, 29,613.49 and 11,900.31

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Solution

The fourth proportional to 21,460.47, 29,613.49 and 11,900.31 is: 16,421.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,460.47 : 29,613.49 = 11,900.31 : x
  2. Step 2: Convert to fraction form
    21,460.47/29,613.49 = 11,900.31/x
  3. Step 3: Cross multiply
    21,460.47x = 29,613.49 × 11,900.31
  4. Step 4: Simplify right side
    21,460.47x = 352,409,711.18
  5. Step 5: Solve for x
    x = 352,409,711.18/21,460.47
  6. Step 6: Final answer
    x = 16,421.34

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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.