Home / 19,980.32-29,966.34-9,445.87

Finding the Fourth Proportional to 19,980.32, 29,966.34 and 9,445.87

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Solution

The fourth proportional to 19,980.32, 29,966.34 and 9,445.87 is: 14,166.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,980.32 : 29,966.34 = 9,445.87 : x
  2. Step 2: Convert to fraction form
    19,980.32/29,966.34 = 9,445.87/x
  3. Step 3: Cross multiply
    19,980.32x = 29,966.34 × 9,445.87
  4. Step 4: Simplify right side
    19,980.32x = 283,058,002.18
  5. Step 5: Solve for x
    x = 283,058,002.18/19,980.32
  6. Step 6: Final answer
    x = 14,166.84

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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.