Home / 13,605.92-18,769.50-9,130.64

Finding the Fourth Proportional to 13,605.92, 18,769.50 and 9,130.64

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Solution

The fourth proportional to 13,605.92, 18,769.50 and 9,130.64 is: 12,595.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,605.92 : 18,769.50 = 9,130.64 : x
  2. Step 2: Convert to fraction form
    13,605.92/18,769.50 = 9,130.64/x
  3. Step 3: Cross multiply
    13,605.92x = 18,769.50 × 9,130.64
  4. Step 4: Simplify right side
    13,605.92x = 171,377,547.48
  5. Step 5: Solve for x
    x = 171,377,547.48/13,605.92
  6. Step 6: Final answer
    x = 12,595.81

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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.