Home / 21,130.67-29,164.65-14,434.81

Finding the Fourth Proportional to 21,130.67, 29,164.65 and 14,434.81

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Solution

The fourth proportional to 21,130.67, 29,164.65 and 14,434.81 is: 19,922.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,130.67 : 29,164.65 = 14,434.81 : x
  2. Step 2: Convert to fraction form
    21,130.67/29,164.65 = 14,434.81/x
  3. Step 3: Cross multiply
    21,130.67x = 29,164.65 × 14,434.81
  4. Step 4: Simplify right side
    21,130.67x = 420,986,181.47
  5. Step 5: Solve for x
    x = 420,986,181.47/21,130.67
  6. Step 6: Final answer
    x = 19,922.99

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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.