Home / 14,421.68-19,903.84-8,455.70

Finding the Fourth Proportional to 14,421.68, 19,903.84 and 8,455.70

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Solution

The fourth proportional to 14,421.68, 19,903.84 and 8,455.70 is: 11,669.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,421.68 : 19,903.84 = 8,455.70 : x
  2. Step 2: Convert to fraction form
    14,421.68/19,903.84 = 8,455.70/x
  3. Step 3: Cross multiply
    14,421.68x = 19,903.84 × 8,455.70
  4. Step 4: Simplify right side
    14,421.68x = 168,300,899.89
  5. Step 5: Solve for x
    x = 168,300,899.89/14,421.68
  6. Step 6: Final answer
    x = 11,669.99

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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.