Home / 28,224.81-38,950.50-15,478.11

Finding the Fourth Proportional to 28,224.81, 38,950.50 and 15,478.11

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Solution

The fourth proportional to 28,224.81, 38,950.50 and 15,478.11 is: 21,359.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,224.81 : 38,950.50 = 15,478.11 : x
  2. Step 2: Convert to fraction form
    28,224.81/38,950.50 = 15,478.11/x
  3. Step 3: Cross multiply
    28,224.81x = 38,950.50 × 15,478.11
  4. Step 4: Simplify right side
    28,224.81x = 602,880,123.56
  5. Step 5: Solve for x
    x = 602,880,123.56/28,224.81
  6. Step 6: Final answer
    x = 21,359.94

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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.