Home / 13,409.04-18,517.08-8,637.36

Finding the Fourth Proportional to 13,409.04, 18,517.08 and 8,637.36

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Solution

The fourth proportional to 13,409.04, 18,517.08 and 8,637.36 is: 11,927.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,409.04 : 18,517.08 = 8,637.36 : x
  2. Step 2: Convert to fraction form
    13,409.04/18,517.08 = 8,637.36/x
  3. Step 3: Cross multiply
    13,409.04x = 18,517.08 × 8,637.36
  4. Step 4: Simplify right side
    13,409.04x = 159,938,686.11
  5. Step 5: Solve for x
    x = 159,938,686.11/13,409.04
  6. Step 6: Final answer
    x = 11,927.68

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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.