Home / 28,127.40-42,239.70-15,005.40

Finding the Fourth Proportional to 28,127.40, 42,239.70 and 15,005.40

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Solution

The fourth proportional to 28,127.40, 42,239.70 and 15,005.40 is: 22,534.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,127.40 : 42,239.70 = 15,005.40 : x
  2. Step 2: Convert to fraction form
    28,127.40/42,239.70 = 15,005.40/x
  3. Step 3: Cross multiply
    28,127.40x = 42,239.70 × 15,005.40
  4. Step 4: Simplify right side
    28,127.40x = 633,823,594.38
  5. Step 5: Solve for x
    x = 633,823,594.38/28,127.40
  6. Step 6: Final answer
    x = 22,534.03

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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.