Home / 28,931.48-43,355.10-14,123.60

Finding the Fourth Proportional to 28,931.48, 43,355.10 and 14,123.60

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Solution

The fourth proportional to 28,931.48, 43,355.10 and 14,123.60 is: 21,164.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,931.48 : 43,355.10 = 14,123.60 : x
  2. Step 2: Convert to fraction form
    28,931.48/43,355.10 = 14,123.60/x
  3. Step 3: Cross multiply
    28,931.48x = 43,355.10 × 14,123.60
  4. Step 4: Simplify right side
    28,931.48x = 612,330,090.36
  5. Step 5: Solve for x
    x = 612,330,090.36/28,931.48
  6. Step 6: Final answer
    x = 21,164.84

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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.