Home / 13,869.04-19,139.24-8,280.08

Finding the Fourth Proportional to 13,869.04, 19,139.24 and 8,280.08

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Solution

The fourth proportional to 13,869.04, 19,139.24 and 8,280.08 is: 11,426.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,869.04 : 19,139.24 = 8,280.08 : x
  2. Step 2: Convert to fraction form
    13,869.04/19,139.24 = 8,280.08/x
  3. Step 3: Cross multiply
    13,869.04x = 19,139.24 × 8,280.08
  4. Step 4: Simplify right side
    13,869.04x = 158,474,438.34
  5. Step 5: Solve for x
    x = 158,474,438.34/13,869.04
  6. Step 6: Final answer
    x = 11,426.49

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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.