Home / 28,160.40-38,861.26-15,239.66

Finding the Fourth Proportional to 28,160.40, 38,861.26 and 15,239.66

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Solution

The fourth proportional to 28,160.40, 38,861.26 and 15,239.66 is: 21,030.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,160.40 : 38,861.26 = 15,239.66 : x
  2. Step 2: Convert to fraction form
    28,160.40/38,861.26 = 15,239.66/x
  3. Step 3: Cross multiply
    28,160.40x = 38,861.26 × 15,239.66
  4. Step 4: Simplify right side
    28,160.40x = 592,232,242.89
  5. Step 5: Solve for x
    x = 592,232,242.89/28,160.40
  6. Step 6: Final answer
    x = 21,030.67

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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.