Home / 30,986.39-42,762.24-18,237.26

Finding the Fourth Proportional to 30,986.39, 42,762.24 and 18,237.26

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Solution

The fourth proportional to 30,986.39, 42,762.24 and 18,237.26 is: 25,168.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,986.39 : 42,762.24 = 18,237.26 : x
  2. Step 2: Convert to fraction form
    30,986.39/42,762.24 = 18,237.26/x
  3. Step 3: Cross multiply
    30,986.39x = 42,762.24 × 18,237.26
  4. Step 4: Simplify right side
    30,986.39x = 779,865,875.25
  5. Step 5: Solve for x
    x = 779,865,875.25/30,986.39
  6. Step 6: Final answer
    x = 25,168.02

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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.