Home / 28,421.08-39,220.47-16,485.53

Finding the Fourth Proportional to 28,421.08, 39,220.47 and 16,485.53

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Solution

The fourth proportional to 28,421.08, 39,220.47 and 16,485.53 is: 22,749.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,421.08 : 39,220.47 = 16,485.53 : x
  2. Step 2: Convert to fraction form
    28,421.08/39,220.47 = 16,485.53/x
  3. Step 3: Cross multiply
    28,421.08x = 39,220.47 × 16,485.53
  4. Step 4: Simplify right side
    28,421.08x = 646,570,038.70
  5. Step 5: Solve for x
    x = 646,570,038.70/28,421.08
  6. Step 6: Final answer
    x = 22,749.67

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.