Home / 20,421,495.08-28,182,253.76-11,254,728.32

Finding the Fourth Proportional to 20,421,495.08, 28,182,253.76 and 11,254,728.32

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Solution

The fourth proportional to 20,421,495.08, 28,182,253.76 and 11,254,728.32 is: 15,531,850.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,421,495.08 : 28,182,253.76 = 11,254,728.32 : x
  2. Step 2: Convert to fraction form
    20,421,495.08/28,182,253.76 = 11,254,728.32/x
  3. Step 3: Cross multiply
    20,421,495.08x = 28,182,253.76 × 11,254,728.32
  4. Step 4: Simplify right side
    20,421,495.08x = 317,183,609,514,098.50
  5. Step 5: Solve for x
    x = 317,183,609,514,098.50/20,421,495.08
  6. Step 6: Final answer
    x = 15,531,850.55

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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.