Home / 30,871.66-42,598.81-19,521.13

Finding the Fourth Proportional to 30,871.66, 42,598.81 and 19,521.13

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Solution

The fourth proportional to 30,871.66, 42,598.81 and 19,521.13 is: 26,936.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,871.66 : 42,598.81 = 19,521.13 : x
  2. Step 2: Convert to fraction form
    30,871.66/42,598.81 = 19,521.13/x
  3. Step 3: Cross multiply
    30,871.66x = 42,598.81 × 19,521.13
  4. Step 4: Simplify right side
    30,871.66x = 831,576,907.86
  5. Step 5: Solve for x
    x = 831,576,907.86/30,871.66
  6. Step 6: Final answer
    x = 26,936.58

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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.