Home / 13,686.03-18,886.77-7,398.41

Finding the Fourth Proportional to 13,686.03, 18,886.77 and 7,398.41

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Solution

The fourth proportional to 13,686.03, 18,886.77 and 7,398.41 is: 10,209.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,686.03 : 18,886.77 = 7,398.41 : x
  2. Step 2: Convert to fraction form
    13,686.03/18,886.77 = 7,398.41/x
  3. Step 3: Cross multiply
    13,686.03x = 18,886.77 × 7,398.41
  4. Step 4: Simplify right side
    13,686.03x = 139,731,973.60
  5. Step 5: Solve for x
    x = 139,731,973.60/13,686.03
  6. Step 6: Final answer
    x = 10,209.83

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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.