Home / 20,888.69-31,293.79-10,346.45

Finding the Fourth Proportional to 20,888.69, 31,293.79 and 10,346.45

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Solution

The fourth proportional to 20,888.69, 31,293.79 and 10,346.45 is: 15,500.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,888.69 : 31,293.79 = 10,346.45 : x
  2. Step 2: Convert to fraction form
    20,888.69/31,293.79 = 10,346.45/x
  3. Step 3: Cross multiply
    20,888.69x = 31,293.79 × 10,346.45
  4. Step 4: Simplify right side
    20,888.69x = 323,779,633.55
  5. Step 5: Solve for x
    x = 323,779,633.55/20,888.69
  6. Step 6: Final answer
    x = 15,500.24

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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.