Home / 9,328,655.09-12,872,978.48-5,142,156.87

Finding the Fourth Proportional to 9,328,655.09, 12,872,978.48 and 5,142,156.87

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Solution

The fourth proportional to 9,328,655.09, 12,872,978.48 and 5,142,156.87 is: 7,095,864.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,328,655.09 : 12,872,978.48 = 5,142,156.87 : x
  2. Step 2: Convert to fraction form
    9,328,655.09/12,872,978.48 = 5,142,156.87/x
  3. Step 3: Cross multiply
    9,328,655.09x = 12,872,978.48 × 5,142,156.87
  4. Step 4: Simplify right side
    9,328,655.09x = 66,194,874,702,583.38
  5. Step 5: Solve for x
    x = 66,194,874,702,583.38/9,328,655.09
  6. Step 6: Final answer
    x = 7,095,864.74

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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.