Home / 13,605.74-18,777.36-7,637.45

Finding the Fourth Proportional to 13,605.74, 18,777.36 and 7,637.45

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Solution

The fourth proportional to 13,605.74, 18,777.36 and 7,637.45 is: 10,540.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,605.74 : 18,777.36 = 7,637.45 : x
  2. Step 2: Convert to fraction form
    13,605.74/18,777.36 = 7,637.45/x
  3. Step 3: Cross multiply
    13,605.74x = 18,777.36 × 7,637.45
  4. Step 4: Simplify right side
    13,605.74x = 143,411,148.13
  5. Step 5: Solve for x
    x = 143,411,148.13/13,605.74
  6. Step 6: Final answer
    x = 10,540.49

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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.