Home / 21,840.16-30,143.42-14,293.19

Finding the Fourth Proportional to 21,840.16, 30,143.42 and 14,293.19

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Solution

The fourth proportional to 21,840.16, 30,143.42 and 14,293.19 is: 19,727.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,840.16 : 30,143.42 = 14,293.19 : x
  2. Step 2: Convert to fraction form
    21,840.16/30,143.42 = 14,293.19/x
  3. Step 3: Cross multiply
    21,840.16x = 30,143.42 × 14,293.19
  4. Step 4: Simplify right side
    21,840.16x = 430,845,557.84
  5. Step 5: Solve for x
    x = 430,845,557.84/21,840.16
  6. Step 6: Final answer
    x = 19,727.22

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Half scale
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Double scale
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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.