Home / 31,017.04-42,803.28-16,869.87

Finding the Fourth Proportional to 31,017.04, 42,803.28 and 16,869.87

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Solution

The fourth proportional to 31,017.04, 42,803.28 and 16,869.87 is: 23,280.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,017.04 : 42,803.28 = 16,869.87 : x
  2. Step 2: Convert to fraction form
    31,017.04/42,803.28 = 16,869.87/x
  3. Step 3: Cross multiply
    31,017.04x = 42,803.28 × 16,869.87
  4. Step 4: Simplify right side
    31,017.04x = 722,085,769.17
  5. Step 5: Solve for x
    x = 722,085,769.17/31,017.04
  6. Step 6: Final answer
    x = 23,280.29

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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.