Home / 13,177.63-18,178.27-8,928.91

Finding the Fourth Proportional to 13,177.63, 18,178.27 and 8,928.91

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Solution

The fourth proportional to 13,177.63, 18,178.27 and 8,928.91 is: 12,317.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,177.63 : 18,178.27 = 8,928.91 : x
  2. Step 2: Convert to fraction form
    13,177.63/18,178.27 = 8,928.91/x
  3. Step 3: Cross multiply
    13,177.63x = 18,178.27 × 8,928.91
  4. Step 4: Simplify right side
    13,177.63x = 162,312,136.79
  5. Step 5: Solve for x
    x = 162,312,136.79/13,177.63
  6. Step 6: Final answer
    x = 12,317.25

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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.