Home / 20,776.02-31,117.55-9,666.06

Finding the Fourth Proportional to 20,776.02, 31,117.55 and 9,666.06

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Solution

The fourth proportional to 20,776.02, 31,117.55 and 9,666.06 is: 14,477.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,776.02 : 31,117.55 = 9,666.06 : x
  2. Step 2: Convert to fraction form
    20,776.02/31,117.55 = 9,666.06/x
  3. Step 3: Cross multiply
    20,776.02x = 31,117.55 × 9,666.06
  4. Step 4: Simplify right side
    20,776.02x = 300,784,105.35
  5. Step 5: Solve for x
    x = 300,784,105.35/20,776.02
  6. Step 6: Final answer
    x = 14,477.47

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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.