Home / 19,440-26,828.16-11,057.28

Finding the Fourth Proportional to 19,440, 26,828.16 and 11,057.28

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Solution

The fourth proportional to 19,440, 26,828.16 and 11,057.28 is: 15,259.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,440 : 26,828.16 = 11,057.28 : x
  2. Step 2: Convert to fraction form
    19,440/26,828.16 = 11,057.28/x
  3. Step 3: Cross multiply
    19,440x = 26,828.16 × 11,057.28
  4. Step 4: Simplify right side
    19,440x = 296,646,477.00
  5. Step 5: Solve for x
    x = 296,646,477.00/19,440
  6. Step 6: Final answer
    x = 15,259.59

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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.