Home / 13,606.49-18,775.91-7,637.00

Finding the Fourth Proportional to 13,606.49, 18,775.91 and 7,637.00

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Solution

The fourth proportional to 13,606.49, 18,775.91 and 7,637.00 is: 10,538.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,606.49 : 18,775.91 = 7,637.00 : x
  2. Step 2: Convert to fraction form
    13,606.49/18,775.91 = 7,637.00/x
  3. Step 3: Cross multiply
    13,606.49x = 18,775.91 × 7,637.00
  4. Step 4: Simplify right side
    13,606.49x = 143,391,492.61
  5. Step 5: Solve for x
    x = 143,391,492.61/13,606.49
  6. Step 6: Final answer
    x = 10,538.47

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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.