Home / 19,840.90-29,783.22-9,977.53

Finding the Fourth Proportional to 19,840.90, 29,783.22 and 9,977.53

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Solution

The fourth proportional to 19,840.90, 29,783.22 and 9,977.53 is: 14,977.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,840.90 : 29,783.22 = 9,977.53 : x
  2. Step 2: Convert to fraction form
    19,840.90/29,783.22 = 9,977.53/x
  3. Step 3: Cross multiply
    19,840.90x = 29,783.22 × 9,977.53
  4. Step 4: Simplify right side
    19,840.90x = 297,162,971.05
  5. Step 5: Solve for x
    x = 297,162,971.05/19,840.90
  6. Step 6: Final answer
    x = 14,977.29

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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.