Home / 30,685.65-42,349.41-18,756.93

Finding the Fourth Proportional to 30,685.65, 42,349.41 and 18,756.93

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Solution

The fourth proportional to 30,685.65, 42,349.41 and 18,756.93 is: 25,886.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,685.65 : 42,349.41 = 18,756.93 : x
  2. Step 2: Convert to fraction form
    30,685.65/42,349.41 = 18,756.93/x
  3. Step 3: Cross multiply
    30,685.65x = 42,349.41 × 18,756.93
  4. Step 4: Simplify right side
    30,685.65x = 794,344,918.91
  5. Step 5: Solve for x
    x = 794,344,918.91/30,685.65
  6. Step 6: Final answer
    x = 25,886.53

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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.