Home / 13,490.65-18,618.93-7,750.35

Finding the Fourth Proportional to 13,490.65, 18,618.93 and 7,750.35

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Solution

The fourth proportional to 13,490.65, 18,618.93 and 7,750.35 is: 10,696.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,490.65 : 18,618.93 = 7,750.35 : x
  2. Step 2: Convert to fraction form
    13,490.65/18,618.93 = 7,750.35/x
  3. Step 3: Cross multiply
    13,490.65x = 18,618.93 × 7,750.35
  4. Step 4: Simplify right side
    13,490.65x = 144,303,224.13
  5. Step 5: Solve for x
    x = 144,303,224.13/13,490.65
  6. Step 6: Final answer
    x = 10,696.54

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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.