Home / 21,092.93-31,639.40-19,332.99

Finding the Fourth Proportional to 21,092.93, 31,639.40 and 19,332.99

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Solution

The fourth proportional to 21,092.93, 31,639.40 and 19,332.99 is: 28,999.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,092.93 : 31,639.40 = 19,332.99 : x
  2. Step 2: Convert to fraction form
    21,092.93/31,639.40 = 19,332.99/x
  3. Step 3: Cross multiply
    21,092.93x = 31,639.40 × 19,332.99
  4. Step 4: Simplify right side
    21,092.93x = 611,684,203.81
  5. Step 5: Solve for x
    x = 611,684,203.81/21,092.93
  6. Step 6: Final answer
    x = 28,999.49

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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.