Home / 38,812.48-53,557.68-21,812.80

Finding the Fourth Proportional to 38,812.48, 53,557.68 and 21,812.80

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Solution

The fourth proportional to 38,812.48, 53,557.68 and 21,812.80 is: 30,099.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,812.48 : 53,557.68 = 21,812.80 : x
  2. Step 2: Convert to fraction form
    38,812.48/53,557.68 = 21,812.80/x
  3. Step 3: Cross multiply
    38,812.48x = 53,557.68 × 21,812.80
  4. Step 4: Simplify right side
    38,812.48x = 1,168,242,962.30
  5. Step 5: Solve for x
    x = 1,168,242,962.30/38,812.48
  6. Step 6: Final answer
    x = 30,099.67

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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.