Home / 16,130.80-22,260.72-9,421.12

Finding the Fourth Proportional to 16,130.80, 22,260.72 and 9,421.12

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Solution

The fourth proportional to 16,130.80, 22,260.72 and 9,421.12 is: 13,001.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,130.80 : 22,260.72 = 9,421.12 : x
  2. Step 2: Convert to fraction form
    16,130.80/22,260.72 = 9,421.12/x
  3. Step 3: Cross multiply
    16,130.80x = 22,260.72 × 9,421.12
  4. Step 4: Simplify right side
    16,130.80x = 209,720,914.41
  5. Step 5: Solve for x
    x = 209,720,914.41/16,130.80
  6. Step 6: Final answer
    x = 13,001.27

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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.