Home / 13,111.80-18,117.30-10,480.92

Finding the Fourth Proportional to 13,111.80, 18,117.30 and 10,480.92

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Solution

The fourth proportional to 13,111.80, 18,117.30 and 10,480.92 is: 14,482.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,111.80 : 18,117.30 = 10,480.92 : x
  2. Step 2: Convert to fraction form
    13,111.80/18,117.30 = 10,480.92/x
  3. Step 3: Cross multiply
    13,111.80x = 18,117.30 × 10,480.92
  4. Step 4: Simplify right side
    13,111.80x = 189,885,971.92
  5. Step 5: Solve for x
    x = 189,885,971.92/13,111.80
  6. Step 6: Final answer
    x = 14,482.07

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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.