Home / 30,644.48-42,294.30-28,643.37

Finding the Fourth Proportional to 30,644.48, 42,294.30 and 28,643.37

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Solution

The fourth proportional to 30,644.48, 42,294.30 and 28,643.37 is: 39,532.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,644.48 : 42,294.30 = 28,643.37 : x
  2. Step 2: Convert to fraction form
    30,644.48/42,294.30 = 28,643.37/x
  3. Step 3: Cross multiply
    30,644.48x = 42,294.30 × 28,643.37
  4. Step 4: Simplify right side
    30,644.48x = 1,211,451,283.79
  5. Step 5: Solve for x
    x = 1,211,451,283.79/30,644.48
  6. Step 6: Final answer
    x = 39,532.45

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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.