Home / 28,511,981.40-42,767,972.10-12,586,733.40

Finding the Fourth Proportional to 28,511,981.40, 42,767,972.10 and 12,586,733.40

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Solution

The fourth proportional to 28,511,981.40, 42,767,972.10 and 12,586,733.40 is: 18,880,100.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,511,981.40 : 42,767,972.10 = 12,586,733.40 : x
  2. Step 2: Convert to fraction form
    28,511,981.40/42,767,972.10 = 12,586,733.40/x
  3. Step 3: Cross multiply
    28,511,981.40x = 42,767,972.10 × 12,586,733.40
  4. Step 4: Simplify right side
    28,511,981.40x = 538,309,062,881,338.19
  5. Step 5: Solve for x
    x = 538,309,062,881,338.19/28,511,981.40
  6. Step 6: Final answer
    x = 18,880,100.10

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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.