Home / 20,888.58-31,311-15,333.60

Finding the Fourth Proportional to 20,888.58, 31,311 and 15,333.60

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Solution

The fourth proportional to 20,888.58, 31,311 and 15,333.60 is: 22,984.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,888.58 : 31,311 = 15,333.60 : x
  2. Step 2: Convert to fraction form
    20,888.58/31,311 = 15,333.60/x
  3. Step 3: Cross multiply
    20,888.58x = 31,311 × 15,333.60
  4. Step 4: Simplify right side
    20,888.58x = 480,110,349.60
  5. Step 5: Solve for x
    x = 480,110,349.60/20,888.58
  6. Step 6: Final answer
    x = 22,984.35

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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.