Home / 13,316.89-18,371.73-9,340.60

Finding the Fourth Proportional to 13,316.89, 18,371.73 and 9,340.60

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Solution

The fourth proportional to 13,316.89, 18,371.73 and 9,340.60 is: 12,886.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,316.89 : 18,371.73 = 9,340.60 : x
  2. Step 2: Convert to fraction form
    13,316.89/18,371.73 = 9,340.60/x
  3. Step 3: Cross multiply
    13,316.89x = 18,371.73 × 9,340.60
  4. Step 4: Simplify right side
    13,316.89x = 171,602,981.24
  5. Step 5: Solve for x
    x = 171,602,981.24/13,316.89
  6. Step 6: Final answer
    x = 12,886.12

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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.