Home / 21,854.26-30,156.55-13,358.46

Finding the Fourth Proportional to 21,854.26, 30,156.55 and 13,358.46

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Solution

The fourth proportional to 21,854.26, 30,156.55 and 13,358.46 is: 18,433.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,854.26 : 30,156.55 = 13,358.46 : x
  2. Step 2: Convert to fraction form
    21,854.26/30,156.55 = 13,358.46/x
  3. Step 3: Cross multiply
    21,854.26x = 30,156.55 × 13,358.46
  4. Step 4: Simplify right side
    21,854.26x = 402,845,066.91
  5. Step 5: Solve for x
    x = 402,845,066.91/21,854.26
  6. Step 6: Final answer
    x = 18,433.25

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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.