Home / 19,980.85-29,962.56-10,618.62

Finding the Fourth Proportional to 19,980.85, 29,962.56 and 10,618.62

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Solution

The fourth proportional to 19,980.85, 29,962.56 and 10,618.62 is: 15,923.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,980.85 : 29,962.56 = 10,618.62 : x
  2. Step 2: Convert to fraction form
    19,980.85/29,962.56 = 10,618.62/x
  3. Step 3: Cross multiply
    19,980.85x = 29,962.56 × 10,618.62
  4. Step 4: Simplify right side
    19,980.85x = 318,161,038.87
  5. Step 5: Solve for x
    x = 318,161,038.87/19,980.85
  6. Step 6: Final answer
    x = 15,923.30

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1.5x scale

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.