Home / 38,143.04-52,640.51-21,152.61

Finding the Fourth Proportional to 38,143.04, 52,640.51 and 21,152.61

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Solution

The fourth proportional to 38,143.04, 52,640.51 and 21,152.61 is: 29,192.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,143.04 : 52,640.51 = 21,152.61 : x
  2. Step 2: Convert to fraction form
    38,143.04/52,640.51 = 21,152.61/x
  3. Step 3: Cross multiply
    38,143.04x = 52,640.51 × 21,152.61
  4. Step 4: Simplify right side
    38,143.04x = 1,113,484,178.23
  5. Step 5: Solve for x
    x = 1,113,484,178.23/38,143.04
  6. Step 6: Final answer
    x = 29,192.33

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Half 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.