Home / 13,606.28-18,776.51-7,637.80

Finding the Fourth Proportional to 13,606.28, 18,776.51 and 7,637.80

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Solution

The fourth proportional to 13,606.28, 18,776.51 and 7,637.80 is: 10,540.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,606.28 : 18,776.51 = 7,637.80 : x
  2. Step 2: Convert to fraction form
    13,606.28/18,776.51 = 7,637.80/x
  3. Step 3: Cross multiply
    13,606.28x = 18,776.51 × 7,637.80
  4. Step 4: Simplify right side
    13,606.28x = 143,411,142.95
  5. Step 5: Solve for x
    x = 143,411,142.95/13,606.28
  6. Step 6: Final answer
    x = 10,540.07

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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.