Home / 18,948.34-28,430.70-10,173

Finding the Fourth Proportional to 18,948.34, 28,430.70 and 10,173

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Solution

The fourth proportional to 18,948.34, 28,430.70 and 10,173 is: 15,263.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,948.34 : 28,430.70 = 10,173 : x
  2. Step 2: Convert to fraction form
    18,948.34/28,430.70 = 10,173/x
  3. Step 3: Cross multiply
    18,948.34x = 28,430.70 × 10,173
  4. Step 4: Simplify right side
    18,948.34x = 289,225,511.10
  5. Step 5: Solve for x
    x = 289,225,511.10/18,948.34
  6. Step 6: Final answer
    x = 15,263.90

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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.