Home / 13,465-18,583.14-7,880.68

Finding the Fourth Proportional to 13,465, 18,583.14 and 7,880.68

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Solution

The fourth proportional to 13,465, 18,583.14 and 7,880.68 is: 10,876.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,465 : 18,583.14 = 7,880.68 : x
  2. Step 2: Convert to fraction form
    13,465/18,583.14 = 7,880.68/x
  3. Step 3: Cross multiply
    13,465x = 18,583.14 × 7,880.68
  4. Step 4: Simplify right side
    13,465x = 146,447,779.74
  5. Step 5: Solve for x
    x = 146,447,779.74/13,465
  6. Step 6: Final answer
    x = 10,876.18

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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.