Home / 30,901.60-42,645.36-18,156.64

Finding the Fourth Proportional to 30,901.60, 42,645.36 and 18,156.64

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Solution

The fourth proportional to 30,901.60, 42,645.36 and 18,156.64 is: 25,056.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,901.60 : 42,645.36 = 18,156.64 : x
  2. Step 2: Convert to fraction form
    30,901.60/42,645.36 = 18,156.64/x
  3. Step 3: Cross multiply
    30,901.60x = 42,645.36 × 18,156.64
  4. Step 4: Simplify right side
    30,901.60x = 774,296,449.19
  5. Step 5: Solve for x
    x = 774,296,449.19/30,901.60
  6. Step 6: Final answer
    x = 25,056.84

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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.