Home / 18,718,643.20-28,059,302.40-8,603,622.40

Finding the Fourth Proportional to 18,718,643.20, 28,059,302.40 and 8,603,622.40

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Solution

The fourth proportional to 18,718,643.20, 28,059,302.40 and 8,603,622.40 is: 12,896,855.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,718,643.20 : 28,059,302.40 = 8,603,622.40 : x
  2. Step 2: Convert to fraction form
    18,718,643.20/28,059,302.40 = 8,603,622.40/x
  3. Step 3: Cross multiply
    18,718,643.20x = 28,059,302.40 × 8,603,622.40
  4. Step 4: Simplify right side
    18,718,643.20x = 241,411,642,657,013.75
  5. Step 5: Solve for x
    x = 241,411,642,657,013.75/18,718,643.20
  6. Step 6: Final answer
    x = 12,896,855.83

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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.