Home / 28,430,821.80-42,646,357.62-9,000,143.25

Finding the Fourth Proportional to 28,430,821.80, 42,646,357.62 and 9,000,143.25

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Solution

The fourth proportional to 28,430,821.80, 42,646,357.62 and 9,000,143.25 is: 13,500,254.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,430,821.80 : 42,646,357.62 = 9,000,143.25 : x
  2. Step 2: Convert to fraction form
    28,430,821.80/42,646,357.62 = 9,000,143.25/x
  3. Step 3: Cross multiply
    28,430,821.80x = 42,646,357.62 × 9,000,143.25
  4. Step 4: Simplify right side
    28,430,821.80x = 383,823,327,670,729.06
  5. Step 5: Solve for x
    x = 383,823,327,670,729.06/28,430,821.80
  6. Step 6: Final answer
    x = 13,500,254.42

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1.5x scale

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.