Home / 18,955.13-28,420.01-13,337.40

Finding the Fourth Proportional to 18,955.13, 28,420.01 and 13,337.40

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Solution

The fourth proportional to 18,955.13, 28,420.01 and 13,337.40 is: 19,997.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,955.13 : 28,420.01 = 13,337.40 : x
  2. Step 2: Convert to fraction form
    18,955.13/28,420.01 = 13,337.40/x
  3. Step 3: Cross multiply
    18,955.13x = 28,420.01 × 13,337.40
  4. Step 4: Simplify right side
    18,955.13x = 379,049,041.37
  5. Step 5: Solve for x
    x = 379,049,041.37/18,955.13
  6. Step 6: Final answer
    x = 19,997.17

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.