Home / 27,880.45-38,506.95-18,362.90

Finding the Fourth Proportional to 27,880.45, 38,506.95 and 18,362.90

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Solution

The fourth proportional to 27,880.45, 38,506.95 and 18,362.90 is: 25,361.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,880.45 : 38,506.95 = 18,362.90 : x
  2. Step 2: Convert to fraction form
    27,880.45/38,506.95 = 18,362.90/x
  3. Step 3: Cross multiply
    27,880.45x = 38,506.95 × 18,362.90
  4. Step 4: Simplify right side
    27,880.45x = 707,099,368.42
  5. Step 5: Solve for x
    x = 707,099,368.42/27,880.45
  6. Step 6: Final answer
    x = 25,361.84

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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.