Home / 10,880.47-15,014.32-6,405.09

Finding the Fourth Proportional to 10,880.47, 15,014.32 and 6,405.09

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Solution

The fourth proportional to 10,880.47, 15,014.32 and 6,405.09 is: 8,838.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,880.47 : 15,014.32 = 6,405.09 : x
  2. Step 2: Convert to fraction form
    10,880.47/15,014.32 = 6,405.09/x
  3. Step 3: Cross multiply
    10,880.47x = 15,014.32 × 6,405.09
  4. Step 4: Simplify right side
    10,880.47x = 96,168,070.89
  5. Step 5: Solve for x
    x = 96,168,070.89/10,880.47
  6. Step 6: Final answer
    x = 8,838.60

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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.