Home / 20,421,878.50-28,182,192.60-11,254,521.16

Finding the Fourth Proportional to 20,421,878.50, 28,182,192.60 and 11,254,521.16

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Solution

The fourth proportional to 20,421,878.50, 28,182,192.60 and 11,254,521.16 is: 15,531,239.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,421,878.50 : 28,182,192.60 = 11,254,521.16 : x
  2. Step 2: Convert to fraction form
    20,421,878.50/28,182,192.60 = 11,254,521.16/x
  3. Step 3: Cross multiply
    20,421,878.50x = 28,182,192.60 × 11,254,521.16
  4. Step 4: Simplify right side
    20,421,878.50x = 317,177,082,951,895.44
  5. Step 5: Solve for x
    x = 317,177,082,951,895.44/20,421,878.50
  6. Step 6: Final answer
    x = 15,531,239.35

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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.