Home / 31,017.47-42,804.25-16,870.41

Finding the Fourth Proportional to 31,017.47, 42,804.25 and 16,870.41

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Solution

The fourth proportional to 31,017.47, 42,804.25 and 16,870.41 is: 23,281.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,017.47 : 42,804.25 = 16,870.41 : x
  2. Step 2: Convert to fraction form
    31,017.47/42,804.25 = 16,870.41/x
  3. Step 3: Cross multiply
    31,017.47x = 42,804.25 × 16,870.41
  4. Step 4: Simplify right side
    31,017.47x = 722,125,205.07
  5. Step 5: Solve for x
    x = 722,125,205.07/31,017.47
  6. Step 6: Final answer
    x = 23,281.25

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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.