Home / 10,130.40-13,979.59-6,355.60

Finding the Fourth Proportional to 10,130.40, 13,979.59 and 6,355.60

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Solution

The fourth proportional to 10,130.40, 13,979.59 and 6,355.60 is: 8,770.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,130.40 : 13,979.59 = 6,355.60 : x
  2. Step 2: Convert to fraction form
    10,130.40/13,979.59 = 6,355.60/x
  3. Step 3: Cross multiply
    10,130.40x = 13,979.59 × 6,355.60
  4. Step 4: Simplify right side
    10,130.40x = 88,848,631.37
  5. Step 5: Solve for x
    x = 88,848,631.37/10,130.40
  6. Step 6: Final answer
    x = 8,770.50

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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.