Home / 19,970.40-27,557.70-11,585.28

Finding the Fourth Proportional to 19,970.40, 27,557.70 and 11,585.28

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Solution

The fourth proportional to 19,970.40, 27,557.70 and 11,585.28 is: 15,986.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,970.40 : 27,557.70 = 11,585.28 : x
  2. Step 2: Convert to fraction form
    19,970.40/27,557.70 = 11,585.28/x
  3. Step 3: Cross multiply
    19,970.40x = 27,557.70 × 11,585.28
  4. Step 4: Simplify right side
    19,970.40x = 319,263,670.66
  5. Step 5: Solve for x
    x = 319,263,670.66/19,970.40
  6. Step 6: Final answer
    x = 15,986.84

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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.