Home / 22,130.09-30,519-16,478.72

Finding the Fourth Proportional to 22,130.09, 30,519 and 16,478.72

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Solution

The fourth proportional to 22,130.09, 30,519 and 16,478.72 is: 22,725.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,130.09 : 30,519 = 16,478.72 : x
  2. Step 2: Convert to fraction form
    22,130.09/30,519 = 16,478.72/x
  3. Step 3: Cross multiply
    22,130.09x = 30,519 × 16,478.72
  4. Step 4: Simplify right side
    22,130.09x = 502,913,903.09
  5. Step 5: Solve for x
    x = 502,913,903.09/22,130.09
  6. Step 6: Final answer
    x = 22,725.35

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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.