Home / 14,153.28-19,531.44-7,780.04

Finding the Fourth Proportional to 14,153.28, 19,531.44 and 7,780.04

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Solution

The fourth proportional to 14,153.28, 19,531.44 and 7,780.04 is: 10,736.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,153.28 : 19,531.44 = 7,780.04 : x
  2. Step 2: Convert to fraction form
    14,153.28/19,531.44 = 7,780.04/x
  3. Step 3: Cross multiply
    14,153.28x = 19,531.44 × 7,780.04
  4. Step 4: Simplify right side
    14,153.28x = 151,955,384.46
  5. Step 5: Solve for x
    x = 151,955,384.46/14,153.28
  6. Step 6: Final answer
    x = 10,736.41

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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.