Home / 10,631.64-14,671.98-6,155.40

Finding the Fourth Proportional to 10,631.64, 14,671.98 and 6,155.40

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Solution

The fourth proportional to 10,631.64, 14,671.98 and 6,155.40 is: 8,494.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,631.64 : 14,671.98 = 6,155.40 : x
  2. Step 2: Convert to fraction form
    10,631.64/14,671.98 = 6,155.40/x
  3. Step 3: Cross multiply
    10,631.64x = 14,671.98 × 6,155.40
  4. Step 4: Simplify right side
    10,631.64x = 90,311,905.69
  5. Step 5: Solve for x
    x = 90,311,905.69/10,631.64
  6. Step 6: Final answer
    x = 8,494.64

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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.