Home / 28,116.42-42,219.81-18,643.37

Finding the Fourth Proportional to 28,116.42, 42,219.81 and 18,643.37

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Solution

The fourth proportional to 28,116.42, 42,219.81 and 18,643.37 is: 27,995.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,116.42 : 42,219.81 = 18,643.37 : x
  2. Step 2: Convert to fraction form
    28,116.42/42,219.81 = 18,643.37/x
  3. Step 3: Cross multiply
    28,116.42x = 42,219.81 × 18,643.37
  4. Step 4: Simplify right side
    28,116.42x = 787,119,539.16
  5. Step 5: Solve for x
    x = 787,119,539.16/28,116.42
  6. Step 6: Final answer
    x = 27,995.01

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.