Home / 20,935.47-28,870.38-19,206.75

Finding the Fourth Proportional to 20,935.47, 28,870.38 and 19,206.75

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Solution

The fourth proportional to 20,935.47, 28,870.38 and 19,206.75 is: 26,486.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,935.47 : 28,870.38 = 19,206.75 : x
  2. Step 2: Convert to fraction form
    20,935.47/28,870.38 = 19,206.75/x
  3. Step 3: Cross multiply
    20,935.47x = 28,870.38 × 19,206.75
  4. Step 4: Simplify right side
    20,935.47x = 554,506,171.07
  5. Step 5: Solve for x
    x = 554,506,171.07/20,935.47
  6. Step 6: Final answer
    x = 26,486.44

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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.