Home / 15,465.30-21,343.26-8,751.60

Finding the Fourth Proportional to 15,465.30, 21,343.26 and 8,751.60

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Solution

The fourth proportional to 15,465.30, 21,343.26 and 8,751.60 is: 12,077.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,465.30 : 21,343.26 = 8,751.60 : x
  2. Step 2: Convert to fraction form
    15,465.30/21,343.26 = 8,751.60/x
  3. Step 3: Cross multiply
    15,465.30x = 21,343.26 × 8,751.60
  4. Step 4: Simplify right side
    15,465.30x = 186,787,674.22
  5. Step 5: Solve for x
    x = 186,787,674.22/15,465.30
  6. Step 6: Final answer
    x = 12,077.86

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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.