Home / 31,017.78-42,803.61-16,870.26

Finding the Fourth Proportional to 31,017.78, 42,803.61 and 16,870.26

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Solution

The fourth proportional to 31,017.78, 42,803.61 and 16,870.26 is: 23,280.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,017.78 : 42,803.61 = 16,870.26 : x
  2. Step 2: Convert to fraction form
    31,017.78/42,803.61 = 16,870.26/x
  3. Step 3: Cross multiply
    31,017.78x = 42,803.61 × 16,870.26
  4. Step 4: Simplify right side
    31,017.78x = 722,108,029.64
  5. Step 5: Solve for x
    x = 722,108,029.64/31,017.78
  6. Step 6: Final answer
    x = 23,280.45

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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.