Home / 15,420,521.16-21,280,261.86-8,544,997.74

Finding the Fourth Proportional to 15,420,521.16, 21,280,261.86 and 8,544,997.74

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Solution

The fourth proportional to 15,420,521.16, 21,280,261.86 and 8,544,997.74 is: 11,792,065.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,420,521.16 : 21,280,261.86 = 8,544,997.74 : x
  2. Step 2: Convert to fraction form
    15,420,521.16/21,280,261.86 = 8,544,997.74/x
  3. Step 3: Cross multiply
    15,420,521.16x = 21,280,261.86 × 8,544,997.74
  4. Step 4: Simplify right side
    15,420,521.16x = 181,839,789,500,308.19
  5. Step 5: Solve for x
    x = 181,839,789,500,308.19/15,420,521.16
  6. Step 6: Final answer
    x = 11,792,065.11

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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.