Home / 30,736.04-42,433.81-28,964.57

Finding the Fourth Proportional to 30,736.04, 42,433.81 and 28,964.57

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Solution

The fourth proportional to 30,736.04, 42,433.81 and 28,964.57 is: 39,988.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,736.04 : 42,433.81 = 28,964.57 : x
  2. Step 2: Convert to fraction form
    30,736.04/42,433.81 = 28,964.57/x
  3. Step 3: Cross multiply
    30,736.04x = 42,433.81 × 28,964.57
  4. Step 4: Simplify right side
    30,736.04x = 1,229,076,775.53
  5. Step 5: Solve for x
    x = 1,229,076,775.53/30,736.04
  6. Step 6: Final answer
    x = 39,988.14

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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.