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Finding the Fourth Proportional to 15,804.78, 23,707.20 and 10,859.40

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Solution

The fourth proportional to 15,804.78, 23,707.20 and 10,859.40 is: 16,289.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,804.78 : 23,707.20 = 10,859.40 : x
  2. Step 2: Convert to fraction form
    15,804.78/23,707.20 = 10,859.40/x
  3. Step 3: Cross multiply
    15,804.78x = 23,707.20 × 10,859.40
  4. Step 4: Simplify right side
    15,804.78x = 257,445,967.68
  5. Step 5: Solve for x
    x = 257,445,967.68/15,804.78
  6. Step 6: Final answer
    x = 16,289.12

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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.