Home / 19,419.40-26,791.86-11,457.64

Finding the Fourth Proportional to 19,419.40, 26,791.86 and 11,457.64

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Solution

The fourth proportional to 19,419.40, 26,791.86 and 11,457.64 is: 15,807.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,419.40 : 26,791.86 = 11,457.64 : x
  2. Step 2: Convert to fraction form
    19,419.40/26,791.86 = 11,457.64/x
  3. Step 3: Cross multiply
    19,419.40x = 26,791.86 × 11,457.64
  4. Step 4: Simplify right side
    19,419.40x = 306,971,486.81
  5. Step 5: Solve for x
    x = 306,971,486.81/19,419.40
  6. Step 6: Final answer
    x = 15,807.47

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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.