Home / 15,459.93-21,338.64-9,798.03

Finding the Fourth Proportional to 15,459.93, 21,338.64 and 9,798.03

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Solution

The fourth proportional to 15,459.93, 21,338.64 and 9,798.03 is: 13,523.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,459.93 : 21,338.64 = 9,798.03 : x
  2. Step 2: Convert to fraction form
    15,459.93/21,338.64 = 9,798.03/x
  3. Step 3: Cross multiply
    15,459.93x = 21,338.64 × 9,798.03
  4. Step 4: Simplify right side
    15,459.93x = 209,076,634.88
  5. Step 5: Solve for x
    x = 209,076,634.88/15,459.93
  6. Step 6: Final answer
    x = 13,523.78

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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.