Home / 19,008.12-28,507.86-9,142.32

Finding the Fourth Proportional to 19,008.12, 28,507.86 and 9,142.32

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Solution

The fourth proportional to 19,008.12, 28,507.86 and 9,142.32 is: 13,711.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,008.12 : 28,507.86 = 9,142.32 : x
  2. Step 2: Convert to fraction form
    19,008.12/28,507.86 = 9,142.32/x
  3. Step 3: Cross multiply
    19,008.12x = 28,507.86 × 9,142.32
  4. Step 4: Simplify right side
    19,008.12x = 260,627,978.64
  5. Step 5: Solve for x
    x = 260,627,978.64/19,008.12
  6. Step 6: Final answer
    x = 13,711.40

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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.