Home / 30,931.65-42,683.07-18,185.25

Finding the Fourth Proportional to 30,931.65, 42,683.07 and 18,185.25

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Solution

The fourth proportional to 30,931.65, 42,683.07 and 18,185.25 is: 25,094.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,931.65 : 42,683.07 = 18,185.25 : x
  2. Step 2: Convert to fraction form
    30,931.65/42,683.07 = 18,185.25/x
  3. Step 3: Cross multiply
    30,931.65x = 42,683.07 × 18,185.25
  4. Step 4: Simplify right side
    30,931.65x = 776,202,298.72
  5. Step 5: Solve for x
    x = 776,202,298.72/30,931.65
  6. Step 6: Final answer
    x = 25,094.11

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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.