Home / 14,319.99-21,424.10-12,657.87

Finding the Fourth Proportional to 14,319.99, 21,424.10 and 12,657.87

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Solution

The fourth proportional to 14,319.99, 21,424.10 and 12,657.87 is: 18,937.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,319.99 : 21,424.10 = 12,657.87 : x
  2. Step 2: Convert to fraction form
    14,319.99/21,424.10 = 12,657.87/x
  3. Step 3: Cross multiply
    14,319.99x = 21,424.10 × 12,657.87
  4. Step 4: Simplify right side
    14,319.99x = 271,183,409.38
  5. Step 5: Solve for x
    x = 271,183,409.38/14,319.99
  6. Step 6: Final answer
    x = 18,937.40

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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.