Home / 18,989,421.15-28,484,132.10-4,612,392.06

Finding the Fourth Proportional to 18,989,421.15, 28,484,132.10 and 4,612,392.06

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Solution

The fourth proportional to 18,989,421.15, 28,484,132.10 and 4,612,392.06 is: 6,918,588.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,989,421.15 : 28,484,132.10 = 4,612,392.06 : x
  2. Step 2: Convert to fraction form
    18,989,421.15/28,484,132.10 = 4,612,392.06/x
  3. Step 3: Cross multiply
    18,989,421.15x = 28,484,132.10 × 4,612,392.06
  4. Step 4: Simplify right side
    18,989,421.15x = 131,379,984,734,031.12
  5. Step 5: Solve for x
    x = 131,379,984,734,031.12/18,989,421.15
  6. Step 6: Final answer
    x = 6,918,588.18

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.