Home / 57,420.16-86,130.24-17,980.36

Finding the Fourth Proportional to 57,420.16, 86,130.24 and 17,980.36

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Solution

The fourth proportional to 57,420.16, 86,130.24 and 17,980.36 is: 26,970.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,420.16 : 86,130.24 = 17,980.36 : x
  2. Step 2: Convert to fraction form
    57,420.16/86,130.24 = 17,980.36/x
  3. Step 3: Cross multiply
    57,420.16x = 86,130.24 × 17,980.36
  4. Step 4: Simplify right side
    57,420.16x = 1,548,652,722.09
  5. Step 5: Solve for x
    x = 1,548,652,722.09/57,420.16
  6. Step 6: Final answer
    x = 26,970.54

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.