Home / 18,985.53-26,198.73-11,430.39

Finding the Fourth Proportional to 18,985.53, 26,198.73 and 11,430.39

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Solution

The fourth proportional to 18,985.53, 26,198.73 and 11,430.39 is: 15,773.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,985.53 : 26,198.73 = 11,430.39 : x
  2. Step 2: Convert to fraction form
    18,985.53/26,198.73 = 11,430.39/x
  3. Step 3: Cross multiply
    18,985.53x = 26,198.73 × 11,430.39
  4. Step 4: Simplify right side
    18,985.53x = 299,461,701.40
  5. Step 5: Solve for x
    x = 299,461,701.40/18,985.53
  6. Step 6: Final answer
    x = 15,773.15

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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.