Home / 21,407.60-29,530.28-12,454.07

Finding the Fourth Proportional to 21,407.60, 29,530.28 and 12,454.07

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Solution

The fourth proportional to 21,407.60, 29,530.28 and 12,454.07 is: 17,179.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,407.60 : 29,530.28 = 12,454.07 : x
  2. Step 2: Convert to fraction form
    21,407.60/29,530.28 = 12,454.07/x
  3. Step 3: Cross multiply
    21,407.60x = 29,530.28 × 12,454.07
  4. Step 4: Simplify right side
    21,407.60x = 367,771,964.32
  5. Step 5: Solve for x
    x = 367,771,964.32/21,407.60
  6. Step 6: Final answer
    x = 17,179.51

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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.