Home / 12,270.04-16,928.34-9,438.28

Finding the Fourth Proportional to 12,270.04, 16,928.34 and 9,438.28

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Solution

The fourth proportional to 12,270.04, 16,928.34 and 9,438.28 is: 13,021.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,270.04 : 16,928.34 = 9,438.28 : x
  2. Step 2: Convert to fraction form
    12,270.04/16,928.34 = 9,438.28/x
  3. Step 3: Cross multiply
    12,270.04x = 16,928.34 × 9,438.28
  4. Step 4: Simplify right side
    12,270.04x = 159,774,412.86
  5. Step 5: Solve for x
    x = 159,774,412.86/12,270.04
  6. Step 6: Final answer
    x = 13,021.51

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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.