Home / 12,390.93-18,572.36-6,155.28

Finding the Fourth Proportional to 12,390.93, 18,572.36 and 6,155.28

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Solution

The fourth proportional to 12,390.93, 18,572.36 and 6,155.28 is: 9,225.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,390.93 : 18,572.36 = 6,155.28 : x
  2. Step 2: Convert to fraction form
    12,390.93/18,572.36 = 6,155.28/x
  3. Step 3: Cross multiply
    12,390.93x = 18,572.36 × 6,155.28
  4. Step 4: Simplify right side
    12,390.93x = 114,318,045.28
  5. Step 5: Solve for x
    x = 114,318,045.28/12,390.93
  6. Step 6: Final answer
    x = 9,225.95

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.