Home / 14,089.60-21,134.40-13,870.90

Finding the Fourth Proportional to 14,089.60, 21,134.40 and 13,870.90

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Solution

The fourth proportional to 14,089.60, 21,134.40 and 13,870.90 is: 20,806.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,089.60 : 21,134.40 = 13,870.90 : x
  2. Step 2: Convert to fraction form
    14,089.60/21,134.40 = 13,870.90/x
  3. Step 3: Cross multiply
    14,089.60x = 21,134.40 × 13,870.90
  4. Step 4: Simplify right side
    14,089.60x = 293,153,148.96
  5. Step 5: Solve for x
    x = 293,153,148.96/14,089.60
  6. Step 6: Final answer
    x = 20,806.35

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.