Home / 26,430.78-36,486.12-18,504.12

Finding the Fourth Proportional to 26,430.78, 36,486.12 and 18,504.12

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Solution

The fourth proportional to 26,430.78, 36,486.12 and 18,504.12 is: 25,543.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,430.78 : 36,486.12 = 18,504.12 : x
  2. Step 2: Convert to fraction form
    26,430.78/36,486.12 = 18,504.12/x
  3. Step 3: Cross multiply
    26,430.78x = 36,486.12 × 18,504.12
  4. Step 4: Simplify right side
    26,430.78x = 675,143,542.81
  5. Step 5: Solve for x
    x = 675,143,542.81/26,430.78
  6. Step 6: Final answer
    x = 25,543.84

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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.