Home / 20,870.60-31,303.16-10,336.52

Finding the Fourth Proportional to 20,870.60, 31,303.16 and 10,336.52

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Solution

The fourth proportional to 20,870.60, 31,303.16 and 10,336.52 is: 15,503.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,870.60 : 31,303.16 = 10,336.52 : x
  2. Step 2: Convert to fraction form
    20,870.60/31,303.16 = 10,336.52/x
  3. Step 3: Cross multiply
    20,870.60x = 31,303.16 × 10,336.52
  4. Step 4: Simplify right side
    20,870.60x = 323,565,739.40
  5. Step 5: Solve for x
    x = 323,565,739.40/20,870.60
  6. Step 6: Final answer
    x = 15,503.42

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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.