Home / 15,580.22-21,509.58-10,290.44

Finding the Fourth Proportional to 15,580.22, 21,509.58 and 10,290.44

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Solution

The fourth proportional to 15,580.22, 21,509.58 and 10,290.44 is: 14,206.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,580.22 : 21,509.58 = 10,290.44 : x
  2. Step 2: Convert to fraction form
    15,580.22/21,509.58 = 10,290.44/x
  3. Step 3: Cross multiply
    15,580.22x = 21,509.58 × 10,290.44
  4. Step 4: Simplify right side
    15,580.22x = 221,343,042.42
  5. Step 5: Solve for x
    x = 221,343,042.42/15,580.22
  6. Step 6: Final answer
    x = 14,206.67

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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.