Home / 10,391.24-14,340.26-5,915.40

Finding the Fourth Proportional to 10,391.24, 14,340.26 and 5,915.40

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Solution

The fourth proportional to 10,391.24, 14,340.26 and 5,915.40 is: 8,163.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,391.24 : 14,340.26 = 5,915.40 : x
  2. Step 2: Convert to fraction form
    10,391.24/14,340.26 = 5,915.40/x
  3. Step 3: Cross multiply
    10,391.24x = 14,340.26 × 5,915.40
  4. Step 4: Simplify right side
    10,391.24x = 84,828,374.00
  5. Step 5: Solve for x
    x = 84,828,374.00/10,391.24
  6. Step 6: Final answer
    x = 8,163.45

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1.5x scale

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.