Home / 13,700.23-18,904.29-8,319.87

Finding the Fourth Proportional to 13,700.23, 18,904.29 and 8,319.87

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Solution

The fourth proportional to 13,700.23, 18,904.29 and 8,319.87 is: 11,480.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,700.23 : 18,904.29 = 8,319.87 : x
  2. Step 2: Convert to fraction form
    13,700.23/18,904.29 = 8,319.87/x
  3. Step 3: Cross multiply
    13,700.23x = 18,904.29 × 8,319.87
  4. Step 4: Simplify right side
    13,700.23x = 157,281,290.07
  5. Step 5: Solve for x
    x = 157,281,290.07/13,700.23
  6. Step 6: Final answer
    x = 11,480.19

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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.