Home / 15,402.56-21,254.00-8,688.47

Finding the Fourth Proportional to 15,402.56, 21,254.00 and 8,688.47

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Solution

The fourth proportional to 15,402.56, 21,254.00 and 8,688.47 is: 11,989.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,402.56 : 21,254.00 = 8,688.47 : x
  2. Step 2: Convert to fraction form
    15,402.56/21,254.00 = 8,688.47/x
  3. Step 3: Cross multiply
    15,402.56x = 21,254.00 × 8,688.47
  4. Step 4: Simplify right side
    15,402.56x = 184,664,591.67
  5. Step 5: Solve for x
    x = 184,664,591.67/15,402.56
  6. Step 6: Final answer
    x = 11,989.22

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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.