Home / 15,072.50-20,756.18-14,109.77

Finding the Fourth Proportional to 15,072.50, 20,756.18 and 14,109.77

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Solution

The fourth proportional to 15,072.50, 20,756.18 and 14,109.77 is: 19,430.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,072.50 : 20,756.18 = 14,109.77 : x
  2. Step 2: Convert to fraction form
    15,072.50/20,756.18 = 14,109.77/x
  3. Step 3: Cross multiply
    15,072.50x = 20,756.18 × 14,109.77
  4. Step 4: Simplify right side
    15,072.50x = 292,865,013.04
  5. Step 5: Solve for x
    x = 292,865,013.04/15,072.50
  6. Step 6: Final answer
    x = 19,430.42

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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.