Home / 23,120.12-31,905.77-12,509.75

Finding the Fourth Proportional to 23,120.12, 31,905.77 and 12,509.75

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Solution

The fourth proportional to 23,120.12, 31,905.77 and 12,509.75 is: 17,263.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    23,120.12 : 31,905.77 = 12,509.75 : x
  2. Step 2: Convert to fraction form
    23,120.12/31,905.77 = 12,509.75/x
  3. Step 3: Cross multiply
    23,120.12x = 31,905.77 × 12,509.75
  4. Step 4: Simplify right side
    23,120.12x = 399,133,206.26
  5. Step 5: Solve for x
    x = 399,133,206.26/23,120.12
  6. Step 6: Final answer
    x = 17,263.46

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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.