Home / 13,210.51-18,230.32-7,242.18

Finding the Fourth Proportional to 13,210.51, 18,230.32 and 7,242.18

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Solution

The fourth proportional to 13,210.51, 18,230.32 and 7,242.18 is: 9,994.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,210.51 : 18,230.32 = 7,242.18 : x
  2. Step 2: Convert to fraction form
    13,210.51/18,230.32 = 7,242.18/x
  3. Step 3: Cross multiply
    13,210.51x = 18,230.32 × 7,242.18
  4. Step 4: Simplify right side
    13,210.51x = 132,027,258.90
  5. Step 5: Solve for x
    x = 132,027,258.90/13,210.51
  6. Step 6: Final answer
    x = 9,994.11

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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.