Home / 14,380.78-21,569.32-10,688.40

Finding the Fourth Proportional to 14,380.78, 21,569.32 and 10,688.40

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Solution

The fourth proportional to 14,380.78, 21,569.32 and 10,688.40 is: 16,031.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,380.78 : 21,569.32 = 10,688.40 : x
  2. Step 2: Convert to fraction form
    14,380.78/21,569.32 = 10,688.40/x
  3. Step 3: Cross multiply
    14,380.78x = 21,569.32 × 10,688.40
  4. Step 4: Simplify right side
    14,380.78x = 230,541,519.89
  5. Step 5: Solve for x
    x = 230,541,519.89/14,380.78
  6. Step 6: Final answer
    x = 16,031.23

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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.