Home / 21,030.32-29,021.87-11,470.23

Finding the Fourth Proportional to 21,030.32, 29,021.87 and 11,470.23

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Solution

The fourth proportional to 21,030.32, 29,021.87 and 11,470.23 is: 15,828.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,030.32 : 29,021.87 = 11,470.23 : x
  2. Step 2: Convert to fraction form
    21,030.32/29,021.87 = 11,470.23/x
  3. Step 3: Cross multiply
    21,030.32x = 29,021.87 × 11,470.23
  4. Step 4: Simplify right side
    21,030.32x = 332,887,523.93
  5. Step 5: Solve for x
    x = 332,887,523.93/21,030.32
  6. Step 6: Final answer
    x = 15,828.93

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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.