Home / 28,243,979.30-42,369,905.55-12,069,802.10

Finding the Fourth Proportional to 28,243,979.30, 42,369,905.55 and 12,069,802.10

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Solution

The fourth proportional to 28,243,979.30, 42,369,905.55 and 12,069,802.10 is: 18,106,385.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,243,979.30 : 42,369,905.55 = 12,069,802.10 : x
  2. Step 2: Convert to fraction form
    28,243,979.30/42,369,905.55 = 12,069,802.10/x
  3. Step 3: Cross multiply
    28,243,979.30x = 42,369,905.55 × 12,069,802.10
  4. Step 4: Simplify right side
    28,243,979.30x = 511,396,374,984,191.62
  5. Step 5: Solve for x
    x = 511,396,374,984,191.62/28,243,979.30
  6. Step 6: Final answer
    x = 18,106,385.42

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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.