Home / 13,258.01-18,298.85-8,409.61

Finding the Fourth Proportional to 13,258.01, 18,298.85 and 8,409.61

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Solution

The fourth proportional to 13,258.01, 18,298.85 and 8,409.61 is: 11,607.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,258.01 : 18,298.85 = 8,409.61 : x
  2. Step 2: Convert to fraction form
    13,258.01/18,298.85 = 8,409.61/x
  3. Step 3: Cross multiply
    13,258.01x = 18,298.85 × 8,409.61
  4. Step 4: Simplify right side
    13,258.01x = 153,886,172.77
  5. Step 5: Solve for x
    x = 153,886,172.77/13,258.01
  6. Step 6: Final answer
    x = 11,607.03

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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.