Home / 19,530.10-26,946.93-11,149.30

Finding the Fourth Proportional to 19,530.10, 26,946.93 and 11,149.30

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Solution

The fourth proportional to 19,530.10, 26,946.93 and 11,149.30 is: 15,383.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,530.10 : 26,946.93 = 11,149.30 : x
  2. Step 2: Convert to fraction form
    19,530.10/26,946.93 = 11,149.30/x
  3. Step 3: Cross multiply
    19,530.10x = 26,946.93 × 11,149.30
  4. Step 4: Simplify right side
    19,530.10x = 300,439,406.65
  5. Step 5: Solve for x
    x = 300,439,406.65/19,530.10
  6. Step 6: Final answer
    x = 15,383.40

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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.