Home / 19,461.60-26,858-11,905.56

Finding the Fourth Proportional to 19,461.60, 26,858 and 11,905.56

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Solution

The fourth proportional to 19,461.60, 26,858 and 11,905.56 is: 16,430.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,461.60 : 26,858 = 11,905.56 : x
  2. Step 2: Convert to fraction form
    19,461.60/26,858 = 11,905.56/x
  3. Step 3: Cross multiply
    19,461.60x = 26,858 × 11,905.56
  4. Step 4: Simplify right side
    19,461.60x = 319,759,530.48
  5. Step 5: Solve for x
    x = 319,759,530.48/19,461.60
  6. Step 6: Final answer
    x = 16,430.28

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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.