Home / 13,670.22-18,866.70-7,703.06

Finding the Fourth Proportional to 13,670.22, 18,866.70 and 7,703.06

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Solution

The fourth proportional to 13,670.22, 18,866.70 and 7,703.06 is: 10,631.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,670.22 : 18,866.70 = 7,703.06 : x
  2. Step 2: Convert to fraction form
    13,670.22/18,866.70 = 7,703.06/x
  3. Step 3: Cross multiply
    13,670.22x = 18,866.70 × 7,703.06
  4. Step 4: Simplify right side
    13,670.22x = 145,331,322.10
  5. Step 5: Solve for x
    x = 145,331,322.10/13,670.22
  6. Step 6: Final answer
    x = 10,631.24

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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.