Home / 28,120,094.72-38,807,024.64-15,897,466.88

Finding the Fourth Proportional to 28,120,094.72, 38,807,024.64 and 15,897,466.88

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Solution

The fourth proportional to 28,120,094.72, 38,807,024.64 and 15,897,466.88 is: 21,939,235.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,120,094.72 : 38,807,024.64 = 15,897,466.88 : x
  2. Step 2: Convert to fraction form
    28,120,094.72/38,807,024.64 = 15,897,466.88/x
  3. Step 3: Cross multiply
    28,120,094.72x = 38,807,024.64 × 15,897,466.88
  4. Step 4: Simplify right side
    28,120,094.72x = 616,933,388,925,744
  5. Step 5: Solve for x
    x = 616,933,388,925,744/28,120,094.72
  6. Step 6: Final answer
    x = 21,939,235.81

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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.