Home / 9,421.34-12,990.85-6,733.76

Finding the Fourth Proportional to 9,421.34, 12,990.85 and 6,733.76

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Solution

The fourth proportional to 9,421.34, 12,990.85 and 6,733.76 is: 9,285.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,421.34 : 12,990.85 = 6,733.76 : x
  2. Step 2: Convert to fraction form
    9,421.34/12,990.85 = 6,733.76/x
  3. Step 3: Cross multiply
    9,421.34x = 12,990.85 × 6,733.76
  4. Step 4: Simplify right side
    9,421.34x = 87,477,184.31
  5. Step 5: Solve for x
    x = 87,477,184.31/9,421.34
  6. Step 6: Final answer
    x = 9,285.01

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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.