Home / 43,421.19-65,130.57-13,840.80

Finding the Fourth Proportional to 43,421.19, 65,130.57 and 13,840.80

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Solution

The fourth proportional to 43,421.19, 65,130.57 and 13,840.80 is: 20,760.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,421.19 : 65,130.57 = 13,840.80 : x
  2. Step 2: Convert to fraction form
    43,421.19/65,130.57 = 13,840.80/x
  3. Step 3: Cross multiply
    43,421.19x = 65,130.57 × 13,840.80
  4. Step 4: Simplify right side
    43,421.19x = 901,459,193.26
  5. Step 5: Solve for x
    x = 901,459,193.26/43,421.19
  6. Step 6: Final answer
    x = 20,760.81

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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.