Home / 28,179,445.14-38,911,332.27-21,198,021.72

Finding the Fourth Proportional to 28,179,445.14, 38,911,332.27 and 21,198,021.72

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Solution

The fourth proportional to 28,179,445.14, 38,911,332.27 and 21,198,021.72 is: 29,271,096.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,179,445.14 : 38,911,332.27 = 21,198,021.72 : x
  2. Step 2: Convert to fraction form
    28,179,445.14/38,911,332.27 = 21,198,021.72/x
  3. Step 3: Cross multiply
    28,179,445.14x = 38,911,332.27 × 21,198,021.72
  4. Step 4: Simplify right side
    28,179,445.14x = 824,843,266,613,596.88
  5. Step 5: Solve for x
    x = 824,843,266,613,596.88/28,179,445.14
  6. Step 6: Final answer
    x = 29,271,096.81

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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.