Home / 28,232,805.56-38,939,306.72-20,421,619.30

Finding the Fourth Proportional to 28,232,805.56, 38,939,306.72 and 20,421,619.30

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Solution

The fourth proportional to 28,232,805.56, 38,939,306.72 and 20,421,619.30 is: 28,165,946.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,232,805.56 : 38,939,306.72 = 20,421,619.30 : x
  2. Step 2: Convert to fraction form
    28,232,805.56/38,939,306.72 = 20,421,619.30/x
  3. Step 3: Cross multiply
    28,232,805.56x = 38,939,306.72 × 20,421,619.30
  4. Step 4: Simplify right side
    28,232,805.56x = 795,203,697,641,771.75
  5. Step 5: Solve for x
    x = 795,203,697,641,771.75/28,232,805.56
  6. Step 6: Final answer
    x = 28,165,946.74

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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.