Home / 8,421.83-12,632.70-6,574.50

Finding the Fourth Proportional to 8,421.83, 12,632.70 and 6,574.50

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Solution

The fourth proportional to 8,421.83, 12,632.70 and 6,574.50 is: 9,861.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,421.83 : 12,632.70 = 6,574.50 : x
  2. Step 2: Convert to fraction form
    8,421.83/12,632.70 = 6,574.50/x
  3. Step 3: Cross multiply
    8,421.83x = 12,632.70 × 6,574.50
  4. Step 4: Simplify right side
    8,421.83x = 83,053,686.15
  5. Step 5: Solve for x
    x = 83,053,686.15/8,421.83
  6. Step 6: Final answer
    x = 9,861.72

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.