Home / 20,357,466.89-28,106,832.94-15,639,459.75

Finding the Fourth Proportional to 20,357,466.89, 28,106,832.94 and 15,639,459.75

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Solution

The fourth proportional to 20,357,466.89, 28,106,832.94 and 15,639,459.75 is: 21,592,847.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,357,466.89 : 28,106,832.94 = 15,639,459.75 : x
  2. Step 2: Convert to fraction form
    20,357,466.89/28,106,832.94 = 15,639,459.75/x
  3. Step 3: Cross multiply
    20,357,466.89x = 28,106,832.94 × 15,639,459.75
  4. Step 4: Simplify right side
    20,357,466.89x = 439,575,682,426,005.50
  5. Step 5: Solve for x
    x = 439,575,682,426,005.50/20,357,466.89
  6. Step 6: Final answer
    x = 21,592,847.72

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1.5x scale

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.