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Finding the Fourth Proportional to 15,762.96, 21,750.48 and 9,387.60

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Solution

The fourth proportional to 15,762.96, 21,750.48 and 9,387.60 is: 12,953.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,762.96 : 21,750.48 = 9,387.60 : x
  2. Step 2: Convert to fraction form
    15,762.96/21,750.48 = 9,387.60/x
  3. Step 3: Cross multiply
    15,762.96x = 21,750.48 × 9,387.60
  4. Step 4: Simplify right side
    15,762.96x = 204,184,806.05
  5. Step 5: Solve for x
    x = 204,184,806.05/15,762.96
  6. Step 6: Final answer
    x = 12,953.46

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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.