Home / 13,478.76-18,608.40-9,010.08

Finding the Fourth Proportional to 13,478.76, 18,608.40 and 9,010.08

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Solution

The fourth proportional to 13,478.76, 18,608.40 and 9,010.08 is: 12,439.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,478.76 : 18,608.40 = 9,010.08 : x
  2. Step 2: Convert to fraction form
    13,478.76/18,608.40 = 9,010.08/x
  3. Step 3: Cross multiply
    13,478.76x = 18,608.40 × 9,010.08
  4. Step 4: Simplify right side
    13,478.76x = 167,663,172.67
  5. Step 5: Solve for x
    x = 167,663,172.67/13,478.76
  6. Step 6: Final answer
    x = 12,439.07

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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.