Home / 13,907.28-19,192.16-7,938.88

Finding the Fourth Proportional to 13,907.28, 19,192.16 and 7,938.88

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Solution

The fourth proportional to 13,907.28, 19,192.16 and 7,938.88 is: 10,955.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,907.28 : 19,192.16 = 7,938.88 : x
  2. Step 2: Convert to fraction form
    13,907.28/19,192.16 = 7,938.88/x
  3. Step 3: Cross multiply
    13,907.28x = 19,192.16 × 7,938.88
  4. Step 4: Simplify right side
    13,907.28x = 152,364,255.18
  5. Step 5: Solve for x
    x = 152,364,255.18/13,907.28
  6. Step 6: Final answer
    x = 10,955.72

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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.