Home / 13,368.24-18,461.88-11,288.88

Finding the Fourth Proportional to 13,368.24, 18,461.88 and 11,288.88

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Solution

The fourth proportional to 13,368.24, 18,461.88 and 11,288.88 is: 15,590.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,368.24 : 18,461.88 = 11,288.88 : x
  2. Step 2: Convert to fraction form
    13,368.24/18,461.88 = 11,288.88/x
  3. Step 3: Cross multiply
    13,368.24x = 18,461.88 × 11,288.88
  4. Step 4: Simplify right side
    13,368.24x = 208,413,947.89
  5. Step 5: Solve for x
    x = 208,413,947.89/13,368.24
  6. Step 6: Final answer
    x = 15,590.23

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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.