Home / 9,915.48-13,681.91-5,935.76

Finding the Fourth Proportional to 9,915.48, 13,681.91 and 5,935.76

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Solution

The fourth proportional to 9,915.48, 13,681.91 and 5,935.76 is: 8,190.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,915.48 : 13,681.91 = 5,935.76 : x
  2. Step 2: Convert to fraction form
    9,915.48/13,681.91 = 5,935.76/x
  3. Step 3: Cross multiply
    9,915.48x = 13,681.91 × 5,935.76
  4. Step 4: Simplify right side
    9,915.48x = 81,212,534.10
  5. Step 5: Solve for x
    x = 81,212,534.10/9,915.48
  6. Step 6: Final answer
    x = 8,190.48

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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.