Home / 19,701.90-27,188.63-12,628.32

Finding the Fourth Proportional to 19,701.90, 27,188.63 and 12,628.32

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Solution

The fourth proportional to 19,701.90, 27,188.63 and 12,628.32 is: 17,427.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,701.90 : 27,188.63 = 12,628.32 : x
  2. Step 2: Convert to fraction form
    19,701.90/27,188.63 = 12,628.32/x
  3. Step 3: Cross multiply
    19,701.90x = 27,188.63 × 12,628.32
  4. Step 4: Simplify right side
    19,701.90x = 343,346,656.86
  5. Step 5: Solve for x
    x = 343,346,656.86/19,701.90
  6. Step 6: Final answer
    x = 17,427.08

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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.