Home / 14,130.09-21,156.18-9,443.64

Finding the Fourth Proportional to 14,130.09, 21,156.18 and 9,443.64

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Solution

The fourth proportional to 14,130.09, 21,156.18 and 9,443.64 is: 14,139.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,130.09 : 21,156.18 = 9,443.64 : x
  2. Step 2: Convert to fraction form
    14,130.09/21,156.18 = 9,443.64/x
  3. Step 3: Cross multiply
    14,130.09x = 21,156.18 × 9,443.64
  4. Step 4: Simplify right side
    14,130.09x = 199,791,347.70
  5. Step 5: Solve for x
    x = 199,791,347.70/14,130.09
  6. Step 6: Final answer
    x = 14,139.42

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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.