Home / 28,160.39-38,864.88-18,477.99

Finding the Fourth Proportional to 28,160.39, 38,864.88 and 18,477.99

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Solution

The fourth proportional to 28,160.39, 38,864.88 and 18,477.99 is: 25,501.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,160.39 : 38,864.88 = 18,477.99 : x
  2. Step 2: Convert to fraction form
    28,160.39/38,864.88 = 18,477.99/x
  3. Step 3: Cross multiply
    28,160.39x = 38,864.88 × 18,477.99
  4. Step 4: Simplify right side
    28,160.39x = 718,144,863.99
  5. Step 5: Solve for x
    x = 718,144,863.99/28,160.39
  6. Step 6: Final answer
    x = 25,501.95

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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.