Home / 15,475.83-21,348.27-13,360.11

Finding the Fourth Proportional to 15,475.83, 21,348.27 and 13,360.11

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Solution

The fourth proportional to 15,475.83, 21,348.27 and 13,360.11 is: 18,429.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,475.83 : 21,348.27 = 13,360.11 : x
  2. Step 2: Convert to fraction form
    15,475.83/21,348.27 = 13,360.11/x
  3. Step 3: Cross multiply
    15,475.83x = 21,348.27 × 13,360.11
  4. Step 4: Simplify right side
    15,475.83x = 285,215,235.51
  5. Step 5: Solve for x
    x = 285,215,235.51/15,475.83
  6. Step 6: Final answer
    x = 18,429.72

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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.