Home / 27,902.81-38,506.16-15,156.12

Finding the Fourth Proportional to 27,902.81, 38,506.16 and 15,156.12

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Solution

The fourth proportional to 27,902.81, 38,506.16 and 15,156.12 is: 20,915.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,902.81 : 38,506.16 = 15,156.12 : x
  2. Step 2: Convert to fraction form
    27,902.81/38,506.16 = 15,156.12/x
  3. Step 3: Cross multiply
    27,902.81x = 38,506.16 × 15,156.12
  4. Step 4: Simplify right side
    27,902.81x = 583,603,981.70
  5. Step 5: Solve for x
    x = 583,603,981.70/27,902.81
  6. Step 6: Final answer
    x = 20,915.60

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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.