Home / 13,457.25-18,555.12-9,210.36

Finding the Fourth Proportional to 13,457.25, 18,555.12 and 9,210.36

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Solution

The fourth proportional to 13,457.25, 18,555.12 and 9,210.36 is: 12,699.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,457.25 : 18,555.12 = 9,210.36 : x
  2. Step 2: Convert to fraction form
    13,457.25/18,555.12 = 9,210.36/x
  3. Step 3: Cross multiply
    13,457.25x = 18,555.12 × 9,210.36
  4. Step 4: Simplify right side
    13,457.25x = 170,899,335.04
  5. Step 5: Solve for x
    x = 170,899,335.04/13,457.25
  6. Step 6: Final answer
    x = 12,699.42

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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.