Home / 13,513.09-18,642.70-9,029.74

Finding the Fourth Proportional to 13,513.09, 18,642.70 and 9,029.74

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Solution

The fourth proportional to 13,513.09, 18,642.70 and 9,029.74 is: 12,457.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,513.09 : 18,642.70 = 9,029.74 : x
  2. Step 2: Convert to fraction form
    13,513.09/18,642.70 = 9,029.74/x
  3. Step 3: Cross multiply
    13,513.09x = 18,642.70 × 9,029.74
  4. Step 4: Simplify right side
    13,513.09x = 168,338,688.75
  5. Step 5: Solve for x
    x = 168,338,688.75/13,513.09
  6. Step 6: Final answer
    x = 12,457.45

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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.