Home / 14,122.81-19,489.35-7,749.28

Finding the Fourth Proportional to 14,122.81, 19,489.35 and 7,749.28

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Solution

The fourth proportional to 14,122.81, 19,489.35 and 7,749.28 is: 10,693.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,122.81 : 19,489.35 = 7,749.28 : x
  2. Step 2: Convert to fraction form
    14,122.81/19,489.35 = 7,749.28/x
  3. Step 3: Cross multiply
    14,122.81x = 19,489.35 × 7,749.28
  4. Step 4: Simplify right side
    14,122.81x = 151,028,430.17
  5. Step 5: Solve for x
    x = 151,028,430.17/14,122.81
  6. Step 6: Final answer
    x = 10,693.94

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.