Home / 18,691,813.60-28,018,366.80-10,154,111.20

Finding the Fourth Proportional to 18,691,813.60, 28,018,366.80 and 10,154,111.20

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Solution

The fourth proportional to 18,691,813.60, 28,018,366.80 and 10,154,111.20 is: 15,220,653.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,691,813.60 : 28,018,366.80 = 10,154,111.20 : x
  2. Step 2: Convert to fraction form
    18,691,813.60/28,018,366.80 = 10,154,111.20/x
  3. Step 3: Cross multiply
    18,691,813.60x = 28,018,366.80 × 10,154,111.20
  4. Step 4: Simplify right side
    18,691,813.60x = 284,501,612,129,588.12
  5. Step 5: Solve for x
    x = 284,501,612,129,588.12/18,691,813.60
  6. Step 6: Final answer
    x = 15,220,653.18

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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.