Home / 19,287.40-28,884.38-13,347.64

Finding the Fourth Proportional to 19,287.40, 28,884.38 and 13,347.64

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Solution

The fourth proportional to 19,287.40, 28,884.38 and 13,347.64 is: 19,989.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,287.40 : 28,884.38 = 13,347.64 : x
  2. Step 2: Convert to fraction form
    19,287.40/28,884.38 = 13,347.64/x
  3. Step 3: Cross multiply
    19,287.40x = 28,884.38 × 13,347.64
  4. Step 4: Simplify right side
    19,287.40x = 385,538,305.86
  5. Step 5: Solve for x
    x = 385,538,305.86/19,287.40
  6. Step 6: Final answer
    x = 19,989.13

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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.