Home / 28,431,039.40-42,646,559.10-18,857,228.20

Finding the Fourth Proportional to 28,431,039.40, 42,646,559.10 and 18,857,228.20

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Solution

The fourth proportional to 28,431,039.40, 42,646,559.10 and 18,857,228.20 is: 28,285,842.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,431,039.40 : 42,646,559.10 = 18,857,228.20 : x
  2. Step 2: Convert to fraction form
    28,431,039.40/42,646,559.10 = 18,857,228.20/x
  3. Step 3: Cross multiply
    28,431,039.40x = 42,646,559.10 × 18,857,228.20
  4. Step 4: Simplify right side
    28,431,039.40x = 804,195,896,893,486.62
  5. Step 5: Solve for x
    x = 804,195,896,893,486.62/28,431,039.40
  6. Step 6: Final answer
    x = 28,285,842.30

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Similar ratio
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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.