Home / 38,079.84-52,550.48-21,312.80

Finding the Fourth Proportional to 38,079.84, 52,550.48 and 21,312.80

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Solution

The fourth proportional to 38,079.84, 52,550.48 and 21,312.80 is: 29,411.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,079.84 : 52,550.48 = 21,312.80 : x
  2. Step 2: Convert to fraction form
    38,079.84/52,550.48 = 21,312.80/x
  3. Step 3: Cross multiply
    38,079.84x = 52,550.48 × 21,312.80
  4. Step 4: Simplify right side
    38,079.84x = 1,119,997,870.14
  5. Step 5: Solve for x
    x = 1,119,997,870.14/38,079.84
  6. Step 6: Final answer
    x = 29,411.83

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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.