Home / 15,189,005.51-20,960,880.53-8,219,681.33

Finding the Fourth Proportional to 15,189,005.51, 20,960,880.53 and 8,219,681.33

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Solution

The fourth proportional to 15,189,005.51, 20,960,880.53 and 8,219,681.33 is: 11,343,188.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,189,005.51 : 20,960,880.53 = 8,219,681.33 : x
  2. Step 2: Convert to fraction form
    15,189,005.51/20,960,880.53 = 8,219,681.33/x
  3. Step 3: Cross multiply
    15,189,005.51x = 20,960,880.53 × 8,219,681.33
  4. Step 4: Simplify right side
    15,189,005.51x = 172,291,758,206,898.69
  5. Step 5: Solve for x
    x = 172,291,758,206,898.69/15,189,005.51
  6. Step 6: Final answer
    x = 11,343,188.87

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.