Home / 20,054,428.70-30,081,643.05-18,778,970.30

Finding the Fourth Proportional to 20,054,428.70, 30,081,643.05 and 18,778,970.30

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Solution

The fourth proportional to 20,054,428.70, 30,081,643.05 and 18,778,970.30 is: 28,168,455.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,054,428.70 : 30,081,643.05 = 18,778,970.30 : x
  2. Step 2: Convert to fraction form
    20,054,428.70/30,081,643.05 = 18,778,970.30/x
  3. Step 3: Cross multiply
    20,054,428.70x = 30,081,643.05 × 18,778,970.30
  4. Step 4: Simplify right side
    20,054,428.70x = 564,902,281,411,151.50
  5. Step 5: Solve for x
    x = 564,902,281,411,151.50/20,054,428.70
  6. Step 6: Final answer
    x = 28,168,455.45

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Similar ratio
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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.