Home / 19,905.69-29,865.02-9,518.25

Finding the Fourth Proportional to 19,905.69, 29,865.02 and 9,518.25

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Solution

The fourth proportional to 19,905.69, 29,865.02 and 9,518.25 is: 14,280.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,905.69 : 29,865.02 = 9,518.25 : x
  2. Step 2: Convert to fraction form
    19,905.69/29,865.02 = 9,518.25/x
  3. Step 3: Cross multiply
    19,905.69x = 29,865.02 × 9,518.25
  4. Step 4: Simplify right side
    19,905.69x = 284,262,679.02
  5. Step 5: Solve for x
    x = 284,262,679.02/19,905.69
  6. Step 6: Final answer
    x = 14,280.47

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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.