Home / 20,784,000.30-31,176,000.45-15,745,152.30

Finding the Fourth Proportional to 20,784,000.30, 31,176,000.45 and 15,745,152.30

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Solution

The fourth proportional to 20,784,000.30, 31,176,000.45 and 15,745,152.30 is: 23,617,728.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,784,000.30 : 31,176,000.45 = 15,745,152.30 : x
  2. Step 2: Convert to fraction form
    20,784,000.30/31,176,000.45 = 15,745,152.30/x
  3. Step 3: Cross multiply
    20,784,000.30x = 31,176,000.45 × 15,745,152.30
  4. Step 4: Simplify right side
    20,784,000.30x = 490,870,875,190,118.56
  5. Step 5: Solve for x
    x = 490,870,875,190,118.56/20,784,000.30
  6. Step 6: Final answer
    x = 23,617,728.45

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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.