Home / 20,888.10-31,303.72-11,514.08

Finding the Fourth Proportional to 20,888.10, 31,303.72 and 11,514.08

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Solution

The fourth proportional to 20,888.10, 31,303.72 and 11,514.08 is: 17,255.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,888.10 : 31,303.72 = 11,514.08 : x
  2. Step 2: Convert to fraction form
    20,888.10/31,303.72 = 11,514.08/x
  3. Step 3: Cross multiply
    20,888.10x = 31,303.72 × 11,514.08
  4. Step 4: Simplify right side
    20,888.10x = 360,433,536.38
  5. Step 5: Solve for x
    x = 360,433,536.38/20,888.10
  6. Step 6: Final answer
    x = 17,255.45

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.