Home / 20,809,782.26-31,152,482.22-12,587,541.47

Finding the Fourth Proportional to 20,809,782.26, 31,152,482.22 and 12,587,541.47

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Solution

The fourth proportional to 20,809,782.26, 31,152,482.22 and 12,587,541.47 is: 18,843,693.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,809,782.26 : 31,152,482.22 = 12,587,541.47 : x
  2. Step 2: Convert to fraction form
    20,809,782.26/31,152,482.22 = 12,587,541.47/x
  3. Step 3: Cross multiply
    20,809,782.26x = 31,152,482.22 × 12,587,541.47
  4. Step 4: Simplify right side
    20,809,782.26x = 392,133,161,837,687.69
  5. Step 5: Solve for x
    x = 392,133,161,837,687.69/20,809,782.26
  6. Step 6: Final answer
    x = 18,843,693.65

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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.