Home / 13,457.22-18,574.16-8,421.45

Finding the Fourth Proportional to 13,457.22, 18,574.16 and 8,421.45

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Solution

The fourth proportional to 13,457.22, 18,574.16 and 8,421.45 is: 11,623.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,457.22 : 18,574.16 = 8,421.45 : x
  2. Step 2: Convert to fraction form
    13,457.22/18,574.16 = 8,421.45/x
  3. Step 3: Cross multiply
    13,457.22x = 18,574.16 × 8,421.45
  4. Step 4: Simplify right side
    13,457.22x = 156,421,317.62
  5. Step 5: Solve for x
    x = 156,421,317.62/13,457.22
  6. Step 6: Final answer
    x = 11,623.60

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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.