Home / 28,051.60-38,683.56-21,761.68

Finding the Fourth Proportional to 28,051.60, 38,683.56 and 21,761.68

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Solution

The fourth proportional to 28,051.60, 38,683.56 and 21,761.68 is: 30,009.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,051.60 : 38,683.56 = 21,761.68 : x
  2. Step 2: Convert to fraction form
    28,051.60/38,683.56 = 21,761.68/x
  3. Step 3: Cross multiply
    28,051.60x = 38,683.56 × 21,761.68
  4. Step 4: Simplify right side
    28,051.60x = 841,819,253.98
  5. Step 5: Solve for x
    x = 841,819,253.98/28,051.60
  6. Step 6: Final answer
    x = 30,009.67

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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.