Home / 20,557.04-30,686.81-18,065.97

Finding the Fourth Proportional to 20,557.04, 30,686.81 and 18,065.97

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Solution

The fourth proportional to 20,557.04, 30,686.81 and 18,065.97 is: 26,968.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,557.04 : 30,686.81 = 18,065.97 : x
  2. Step 2: Convert to fraction form
    20,557.04/30,686.81 = 18,065.97/x
  3. Step 3: Cross multiply
    20,557.04x = 30,686.81 × 18,065.97
  4. Step 4: Simplify right side
    20,557.04x = 554,386,898.53
  5. Step 5: Solve for x
    x = 554,386,898.53/20,557.04
  6. Step 6: Final answer
    x = 26,968.23

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.