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Finding the Fourth Proportional to 9,133.80, 13,698.54 and 8,931.84

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Solution

The fourth proportional to 9,133.80, 13,698.54 and 8,931.84 is: 13,395.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,133.80 : 13,698.54 = 8,931.84 : x
  2. Step 2: Convert to fraction form
    9,133.80/13,698.54 = 8,931.84/x
  3. Step 3: Cross multiply
    9,133.80x = 13,698.54 × 8,931.84
  4. Step 4: Simplify right side
    9,133.80x = 122,353,167.51
  5. Step 5: Solve for x
    x = 122,353,167.51/9,133.80
  6. Step 6: Final answer
    x = 13,395.65

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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.