Home / 19,899.32-27,457.26-13,609.40

Finding the Fourth Proportional to 19,899.32, 27,457.26 and 13,609.40

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Solution

The fourth proportional to 19,899.32, 27,457.26 and 13,609.40 is: 18,778.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,899.32 : 27,457.26 = 13,609.40 : x
  2. Step 2: Convert to fraction form
    19,899.32/27,457.26 = 13,609.40/x
  3. Step 3: Cross multiply
    19,899.32x = 27,457.26 × 13,609.40
  4. Step 4: Simplify right side
    19,899.32x = 373,676,834.24
  5. Step 5: Solve for x
    x = 373,676,834.24/19,899.32
  6. Step 6: Final answer
    x = 18,778.37

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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.