Home / 13,808.45-19,055.57-8,430.86

Finding the Fourth Proportional to 13,808.45, 19,055.57 and 8,430.86

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Solution

The fourth proportional to 13,808.45, 19,055.57 and 8,430.86 is: 11,634.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,808.45 : 19,055.57 = 8,430.86 : x
  2. Step 2: Convert to fraction form
    13,808.45/19,055.57 = 8,430.86/x
  3. Step 3: Cross multiply
    13,808.45x = 19,055.57 × 8,430.86
  4. Step 4: Simplify right side
    13,808.45x = 160,654,848.37
  5. Step 5: Solve for x
    x = 160,654,848.37/13,808.45
  6. Step 6: Final answer
    x = 11,634.53

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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.