Home / 19,385.40-29,078.25-10,615.53

Finding the Fourth Proportional to 19,385.40, 29,078.25 and 10,615.53

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Solution

The fourth proportional to 19,385.40, 29,078.25 and 10,615.53 is: 15,923.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,385.40 : 29,078.25 = 10,615.53 : x
  2. Step 2: Convert to fraction form
    19,385.40/29,078.25 = 10,615.53/x
  3. Step 3: Cross multiply
    19,385.40x = 29,078.25 × 10,615.53
  4. Step 4: Simplify right side
    19,385.40x = 308,681,097.32
  5. Step 5: Solve for x
    x = 308,681,097.32/19,385.40
  6. Step 6: Final answer
    x = 15,923.38

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.