Home / 9,389.93-12,931.85-9,185.81

Finding the Fourth Proportional to 9,389.93, 12,931.85 and 9,185.81

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Solution

The fourth proportional to 9,389.93, 12,931.85 and 9,185.81 is: 12,650.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,389.93 : 12,931.85 = 9,185.81 : x
  2. Step 2: Convert to fraction form
    9,389.93/12,931.85 = 9,185.81/x
  3. Step 3: Cross multiply
    9,389.93x = 12,931.85 × 9,185.81
  4. Step 4: Simplify right side
    9,389.93x = 118,789,475.35
  5. Step 5: Solve for x
    x = 118,789,475.35/9,389.93
  6. Step 6: Final answer
    x = 12,650.74

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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.