Home / 15,385.74-23,070.39-7,971.81

Finding the Fourth Proportional to 15,385.74, 23,070.39 and 7,971.81

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Solution

The fourth proportional to 15,385.74, 23,070.39 and 7,971.81 is: 11,953.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,385.74 : 23,070.39 = 7,971.81 : x
  2. Step 2: Convert to fraction form
    15,385.74/23,070.39 = 7,971.81/x
  3. Step 3: Cross multiply
    15,385.74x = 23,070.39 × 7,971.81
  4. Step 4: Simplify right side
    15,385.74x = 183,912,765.71
  5. Step 5: Solve for x
    x = 183,912,765.71/15,385.74
  6. Step 6: Final answer
    x = 11,953.46

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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.