Home / 20,573.63-28,391.51-11,142.19

Finding the Fourth Proportional to 20,573.63, 28,391.51 and 11,142.19

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Solution

The fourth proportional to 20,573.63, 28,391.51 and 11,142.19 is: 15,376.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,573.63 : 28,391.51 = 11,142.19 : x
  2. Step 2: Convert to fraction form
    20,573.63/28,391.51 = 11,142.19/x
  3. Step 3: Cross multiply
    20,573.63x = 28,391.51 × 11,142.19
  4. Step 4: Simplify right side
    20,573.63x = 316,343,662.15
  5. Step 5: Solve for x
    x = 316,343,662.15/20,573.63
  6. Step 6: Final answer
    x = 15,376.17

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Half scale
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Double scale
Find fourth proportional to 20,574.63, 28,392.89 and 11,143.19
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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.