Home / 13,492.06-18,621.29-7,830.16

Finding the Fourth Proportional to 13,492.06, 18,621.29 and 7,830.16

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Solution

The fourth proportional to 13,492.06, 18,621.29 and 7,830.16 is: 10,806.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,492.06 : 18,621.29 = 7,830.16 : x
  2. Step 2: Convert to fraction form
    13,492.06/18,621.29 = 7,830.16/x
  3. Step 3: Cross multiply
    13,492.06x = 18,621.29 × 7,830.16
  4. Step 4: Simplify right side
    13,492.06x = 145,807,640.96
  5. Step 5: Solve for x
    x = 145,807,640.96/13,492.06
  6. Step 6: Final answer
    x = 10,806.92

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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.