Home / 18,715,828.20-28,073,742.30-10,212,772.20

Finding the Fourth Proportional to 18,715,828.20, 28,073,742.30 and 10,212,772.20

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Solution

The fourth proportional to 18,715,828.20, 28,073,742.30 and 10,212,772.20 is: 15,319,158.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,715,828.20 : 28,073,742.30 = 10,212,772.20 : x
  2. Step 2: Convert to fraction form
    18,715,828.20/28,073,742.30 = 10,212,772.20/x
  3. Step 3: Cross multiply
    18,715,828.20x = 28,073,742.30 × 10,212,772.20
  4. Step 4: Simplify right side
    18,715,828.20x = 286,710,734,911,404.06
  5. Step 5: Solve for x
    x = 286,710,734,911,404.06/18,715,828.20
  6. Step 6: Final answer
    x = 15,319,158.30

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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.