Home / 28,002.18-38,643.03-15,426.93

Finding the Fourth Proportional to 28,002.18, 38,643.03 and 15,426.93

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Solution

The fourth proportional to 28,002.18, 38,643.03 and 15,426.93 is: 21,289.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,002.18 : 38,643.03 = 15,426.93 : x
  2. Step 2: Convert to fraction form
    28,002.18/38,643.03 = 15,426.93/x
  3. Step 3: Cross multiply
    28,002.18x = 38,643.03 × 15,426.93
  4. Step 4: Simplify right side
    28,002.18x = 596,143,318.80
  5. Step 5: Solve for x
    x = 596,143,318.80/28,002.18
  6. Step 6: Final answer
    x = 21,289.18

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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.