Home / 21,155.07-29,159.74-14,346.84

Finding the Fourth Proportional to 21,155.07, 29,159.74 and 14,346.84

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Solution

The fourth proportional to 21,155.07, 29,159.74 and 14,346.84 is: 19,775.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,155.07 : 29,159.74 = 14,346.84 : x
  2. Step 2: Convert to fraction form
    21,155.07/29,159.74 = 14,346.84/x
  3. Step 3: Cross multiply
    21,155.07x = 29,159.74 × 14,346.84
  4. Step 4: Simplify right side
    21,155.07x = 418,350,052.49
  5. Step 5: Solve for x
    x = 418,350,052.49/21,155.07
  6. Step 6: Final answer
    x = 19,775.40

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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.