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Finding the Fourth Proportional to 15,866.40, 23,783.40 and 9,289.20

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Solution

The fourth proportional to 15,866.40, 23,783.40 and 9,289.20 is: 13,924.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,866.40 : 23,783.40 = 9,289.20 : x
  2. Step 2: Convert to fraction form
    15,866.40/23,783.40 = 9,289.20/x
  3. Step 3: Cross multiply
    15,866.40x = 23,783.40 × 9,289.20
  4. Step 4: Simplify right side
    15,866.40x = 220,928,759.28
  5. Step 5: Solve for x
    x = 220,928,759.28/15,866.40
  6. Step 6: Final answer
    x = 13,924.32

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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.