Home / 25,390.40-35,038.77-13,905.25

Finding the Fourth Proportional to 25,390.40, 35,038.77 and 13,905.25

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Solution

The fourth proportional to 25,390.40, 35,038.77 and 13,905.25 is: 19,189.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,390.40 : 35,038.77 = 13,905.25 : x
  2. Step 2: Convert to fraction form
    25,390.40/35,038.77 = 13,905.25/x
  3. Step 3: Cross multiply
    25,390.40x = 35,038.77 × 13,905.25
  4. Step 4: Simplify right side
    25,390.40x = 487,222,856.54
  5. Step 5: Solve for x
    x = 487,222,856.54/25,390.40
  6. Step 6: Final answer
    x = 19,189.25

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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.