Home / 13,603.40-18,776.58-8,823.24

Finding the Fourth Proportional to 13,603.40, 18,776.58 and 8,823.24

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Solution

The fourth proportional to 13,603.40, 18,776.58 and 8,823.24 is: 12,178.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,603.40 : 18,776.58 = 8,823.24 : x
  2. Step 2: Convert to fraction form
    13,603.40/18,776.58 = 8,823.24/x
  3. Step 3: Cross multiply
    13,603.40x = 18,776.58 × 8,823.24
  4. Step 4: Simplify right side
    13,603.40x = 165,670,271.72
  5. Step 5: Solve for x
    x = 165,670,271.72/13,603.40
  6. Step 6: Final answer
    x = 12,178.59

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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.