Home / 30,903.14-42,646.66-18,156.85

Finding the Fourth Proportional to 30,903.14, 42,646.66 and 18,156.85

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Solution

The fourth proportional to 30,903.14, 42,646.66 and 18,156.85 is: 25,056.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,903.14 : 42,646.66 = 18,156.85 : x
  2. Step 2: Convert to fraction form
    30,903.14/42,646.66 = 18,156.85/x
  3. Step 3: Cross multiply
    30,903.14x = 42,646.66 × 18,156.85
  4. Step 4: Simplify right side
    30,903.14x = 774,328,856.61
  5. Step 5: Solve for x
    x = 774,328,856.61/30,903.14
  6. Step 6: Final answer
    x = 25,056.64

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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.