Home / 14,145.10-19,489.35-9,421.18

Finding the Fourth Proportional to 14,145.10, 19,489.35 and 9,421.18

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Solution

The fourth proportional to 14,145.10, 19,489.35 and 9,421.18 is: 12,980.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,145.10 : 19,489.35 = 9,421.18 : x
  2. Step 2: Convert to fraction form
    14,145.10/19,489.35 = 9,421.18/x
  3. Step 3: Cross multiply
    14,145.10x = 19,489.35 × 9,421.18
  4. Step 4: Simplify right side
    14,145.10x = 183,612,674.43
  5. Step 5: Solve for x
    x = 183,612,674.43/14,145.10
  6. Step 6: Final answer
    x = 12,980.66

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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.