Home / 13,710.80-18,888.48-11,305.10

Finding the Fourth Proportional to 13,710.80, 18,888.48 and 11,305.10

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Solution

The fourth proportional to 13,710.80, 18,888.48 and 11,305.10 is: 15,574.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,710.80 : 18,888.48 = 11,305.10 : x
  2. Step 2: Convert to fraction form
    13,710.80/18,888.48 = 11,305.10/x
  3. Step 3: Cross multiply
    13,710.80x = 18,888.48 × 11,305.10
  4. Step 4: Simplify right side
    13,710.80x = 213,536,155.25
  5. Step 5: Solve for x
    x = 213,536,155.25/13,710.80
  6. Step 6: Final answer
    x = 15,574.30

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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.