Home / 18,957.90-28,438.29-14,521.98

Finding the Fourth Proportional to 18,957.90, 28,438.29 and 14,521.98

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Solution

The fourth proportional to 18,957.90, 28,438.29 and 14,521.98 is: 21,784.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,957.90 : 28,438.29 = 14,521.98 : x
  2. Step 2: Convert to fraction form
    18,957.90/28,438.29 = 14,521.98/x
  3. Step 3: Cross multiply
    18,957.90x = 28,438.29 × 14,521.98
  4. Step 4: Simplify right side
    18,957.90x = 412,980,278.61
  5. Step 5: Solve for x
    x = 412,980,278.61/18,957.90
  6. Step 6: Final answer
    x = 21,784.07

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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.