Home / 25,905.12-35,749.48-14,421.20

Finding the Fourth Proportional to 25,905.12, 35,749.48 and 14,421.20

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Solution

The fourth proportional to 25,905.12, 35,749.48 and 14,421.20 is: 19,901.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,905.12 : 35,749.48 = 14,421.20 : x
  2. Step 2: Convert to fraction form
    25,905.12/35,749.48 = 14,421.20/x
  3. Step 3: Cross multiply
    25,905.12x = 35,749.48 × 14,421.20
  4. Step 4: Simplify right side
    25,905.12x = 515,550,400.98
  5. Step 5: Solve for x
    x = 515,550,400.98/25,905.12
  6. Step 6: Final answer
    x = 19,901.49

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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.