Home / 20,955.48-31,421.58-9,698.52

Finding the Fourth Proportional to 20,955.48, 31,421.58 and 9,698.52

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Solution

The fourth proportional to 20,955.48, 31,421.58 and 9,698.52 is: 14,542.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,955.48 : 31,421.58 = 9,698.52 : x
  2. Step 2: Convert to fraction form
    20,955.48/31,421.58 = 9,698.52/x
  3. Step 3: Cross multiply
    20,955.48x = 31,421.58 × 9,698.52
  4. Step 4: Simplify right side
    20,955.48x = 304,742,822.06
  5. Step 5: Solve for x
    x = 304,742,822.06/20,955.48
  6. Step 6: Final answer
    x = 14,542.39

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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.