Home / 19,643.40-27,115.56-12,573.72

Finding the Fourth Proportional to 19,643.40, 27,115.56 and 12,573.72

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Solution

The fourth proportional to 19,643.40, 27,115.56 and 12,573.72 is: 17,356.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,643.40 : 27,115.56 = 12,573.72 : x
  2. Step 2: Convert to fraction form
    19,643.40/27,115.56 = 12,573.72/x
  3. Step 3: Cross multiply
    19,643.40x = 27,115.56 × 12,573.72
  4. Step 4: Simplify right side
    19,643.40x = 340,943,459.08
  5. Step 5: Solve for x
    x = 340,943,459.08/19,643.40
  6. Step 6: Final answer
    x = 17,356.64

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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.