Home / 20,866.40-28,803.48-13,802.48

Finding the Fourth Proportional to 20,866.40, 28,803.48 and 13,802.48

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Solution

The fourth proportional to 20,866.40, 28,803.48 and 13,802.48 is: 19,052.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,866.40 : 28,803.48 = 13,802.48 : x
  2. Step 2: Convert to fraction form
    20,866.40/28,803.48 = 13,802.48/x
  3. Step 3: Cross multiply
    20,866.40x = 28,803.48 × 13,802.48
  4. Step 4: Simplify right side
    20,866.40x = 397,559,456.63
  5. Step 5: Solve for x
    x = 397,559,456.63/20,866.40
  6. Step 6: Final answer
    x = 19,052.61

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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.