Home / 13,487.40-18,612.62-7,518.93

Finding the Fourth Proportional to 13,487.40, 18,612.62 and 7,518.93

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Solution

The fourth proportional to 13,487.40, 18,612.62 and 7,518.93 is: 10,376.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,487.40 : 18,612.62 = 7,518.93 : x
  2. Step 2: Convert to fraction form
    13,487.40/18,612.62 = 7,518.93/x
  3. Step 3: Cross multiply
    13,487.40x = 18,612.62 × 7,518.93
  4. Step 4: Simplify right side
    13,487.40x = 139,946,986.90
  5. Step 5: Solve for x
    x = 139,946,986.90/13,487.40
  6. Step 6: Final answer
    x = 10,376.13

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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.