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Finding the Fourth Proportional to 9,969.89, 14,945.11 and 4,779.41

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Solution

The fourth proportional to 9,969.89, 14,945.11 and 4,779.41 is: 7,164.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,969.89 : 14,945.11 = 4,779.41 : x
  2. Step 2: Convert to fraction form
    9,969.89/14,945.11 = 4,779.41/x
  3. Step 3: Cross multiply
    9,969.89x = 14,945.11 × 4,779.41
  4. Step 4: Simplify right side
    9,969.89x = 71,428,721.51
  5. Step 5: Solve for x
    x = 71,428,721.51/9,969.89
  6. Step 6: Final answer
    x = 7,164.45

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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.