Home / 10,971.90-15,140.25-6,255

Finding the Fourth Proportional to 10,971.90, 15,140.25 and 6,255

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Solution

The fourth proportional to 10,971.90, 15,140.25 and 6,255 is: 8,631.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,971.90 : 15,140.25 = 6,255 : x
  2. Step 2: Convert to fraction form
    10,971.90/15,140.25 = 6,255/x
  3. Step 3: Cross multiply
    10,971.90x = 15,140.25 × 6,255
  4. Step 4: Simplify right side
    10,971.90x = 94,702,263.75
  5. Step 5: Solve for x
    x = 94,702,263.75/10,971.90
  6. Step 6: Final answer
    x = 8,631.35

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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.