Home / 15,869.24-21,895.50-9,903.80

Finding the Fourth Proportional to 15,869.24, 21,895.50 and 9,903.80

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Solution

The fourth proportional to 15,869.24, 21,895.50 and 9,903.80 is: 13,664.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,869.24 : 21,895.50 = 9,903.80 : x
  2. Step 2: Convert to fraction form
    15,869.24/21,895.50 = 9,903.80/x
  3. Step 3: Cross multiply
    15,869.24x = 21,895.50 × 9,903.80
  4. Step 4: Simplify right side
    15,869.24x = 216,848,652.90
  5. Step 5: Solve for x
    x = 216,848,652.90/15,869.24
  6. Step 6: Final answer
    x = 13,664.72

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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.