Home / 12,780,521.24-17,646,900.48-8,435,783.30

Finding the Fourth Proportional to 12,780,521.24, 17,646,900.48 and 8,435,783.30

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Solution

The fourth proportional to 12,780,521.24, 17,646,900.48 and 8,435,783.30 is: 11,647,837.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,780,521.24 : 17,646,900.48 = 8,435,783.30 : x
  2. Step 2: Convert to fraction form
    12,780,521.24/17,646,900.48 = 8,435,783.30/x
  3. Step 3: Cross multiply
    12,780,521.24x = 17,646,900.48 × 8,435,783.30
  4. Step 4: Simplify right side
    12,780,521.24x = 148,865,428,365,946
  5. Step 5: Solve for x
    x = 148,865,428,365,946/12,780,521.24
  6. Step 6: Final answer
    x = 11,647,837.01

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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.