Home / 14,311.80-21,457.70-8,465.40

Finding the Fourth Proportional to 14,311.80, 21,457.70 and 8,465.40

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Solution

The fourth proportional to 14,311.80, 21,457.70 and 8,465.40 is: 12,692.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,311.80 : 21,457.70 = 8,465.40 : x
  2. Step 2: Convert to fraction form
    14,311.80/21,457.70 = 8,465.40/x
  3. Step 3: Cross multiply
    14,311.80x = 21,457.70 × 8,465.40
  4. Step 4: Simplify right side
    14,311.80x = 181,648,013.58
  5. Step 5: Solve for x
    x = 181,648,013.58/14,311.80
  6. Step 6: Final answer
    x = 12,692.19

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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.