Home / 14,603.40-20,152.67-8,315.78

Finding the Fourth Proportional to 14,603.40, 20,152.67 and 8,315.78

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Solution

The fourth proportional to 14,603.40, 20,152.67 and 8,315.78 is: 11,475.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,603.40 : 20,152.67 = 8,315.78 : x
  2. Step 2: Convert to fraction form
    14,603.40/20,152.67 = 8,315.78/x
  3. Step 3: Cross multiply
    14,603.40x = 20,152.67 × 8,315.78
  4. Step 4: Simplify right side
    14,603.40x = 167,585,069.37
  5. Step 5: Solve for x
    x = 167,585,069.37/14,603.40
  6. Step 6: Final answer
    x = 11,475.76

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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.