Home / 21,465.40-29,628.44-12,966.18

Finding the Fourth Proportional to 21,465.40, 29,628.44 and 12,966.18

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Solution

The fourth proportional to 21,465.40, 29,628.44 and 12,966.18 is: 17,897.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,465.40 : 29,628.44 = 12,966.18 : x
  2. Step 2: Convert to fraction form
    21,465.40/29,628.44 = 12,966.18/x
  3. Step 3: Cross multiply
    21,465.40x = 29,628.44 × 12,966.18
  4. Step 4: Simplify right side
    21,465.40x = 384,167,686.16
  5. Step 5: Solve for x
    x = 384,167,686.16/21,465.40
  6. Step 6: Final answer
    x = 17,897.07

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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.