Home / 20,870.60-31,308.94-6,077.64

Finding the Fourth Proportional to 20,870.60, 31,308.94 and 6,077.64

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Solution

The fourth proportional to 20,870.60, 31,308.94 and 6,077.64 is: 9,117.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,870.60 : 31,308.94 = 6,077.64 : x
  2. Step 2: Convert to fraction form
    20,870.60/31,308.94 = 6,077.64/x
  3. Step 3: Cross multiply
    20,870.60x = 31,308.94 × 6,077.64
  4. Step 4: Simplify right side
    20,870.60x = 190,284,466.10
  5. Step 5: Solve for x
    x = 190,284,466.10/20,870.60
  6. Step 6: Final answer
    x = 9,117.35

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.