Home / 20,208,541.80-30,312,812.70-9,978,302.55

Finding the Fourth Proportional to 20,208,541.80, 30,312,812.70 and 9,978,302.55

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Solution

The fourth proportional to 20,208,541.80, 30,312,812.70 and 9,978,302.55 is: 14,967,453.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,208,541.80 : 30,312,812.70 = 9,978,302.55 : x
  2. Step 2: Convert to fraction form
    20,208,541.80/30,312,812.70 = 9,978,302.55/x
  3. Step 3: Cross multiply
    20,208,541.80x = 30,312,812.70 × 9,978,302.55
  4. Step 4: Simplify right side
    20,208,541.80x = 302,470,416,262,082.38
  5. Step 5: Solve for x
    x = 302,470,416,262,082.38/20,208,541.80
  6. Step 6: Final answer
    x = 14,967,453.83

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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.