Home / 15,424.56-21,327.30-14,715

Finding the Fourth Proportional to 15,424.56, 21,327.30 and 14,715

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Solution

The fourth proportional to 15,424.56, 21,327.30 and 14,715 is: 20,346.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,424.56 : 21,327.30 = 14,715 : x
  2. Step 2: Convert to fraction form
    15,424.56/21,327.30 = 14,715/x
  3. Step 3: Cross multiply
    15,424.56x = 21,327.30 × 14,715
  4. Step 4: Simplify right side
    15,424.56x = 313,831,219.50
  5. Step 5: Solve for x
    x = 313,831,219.50/15,424.56
  6. Step 6: Final answer
    x = 20,346.20

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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.