Home / 28,213.06-38,913.33-20,263.45

Finding the Fourth Proportional to 28,213.06, 38,913.33 and 20,263.45

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Solution

The fourth proportional to 28,213.06, 38,913.33 and 20,263.45 is: 27,948.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,213.06 : 38,913.33 = 20,263.45 : x
  2. Step 2: Convert to fraction form
    28,213.06/38,913.33 = 20,263.45/x
  3. Step 3: Cross multiply
    28,213.06x = 38,913.33 × 20,263.45
  4. Step 4: Simplify right side
    28,213.06x = 788,518,316.79
  5. Step 5: Solve for x
    x = 788,518,316.79/28,213.06
  6. Step 6: Final answer
    x = 27,948.70

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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.