Home / 28,715.23-39,627.01-16,139.98

Finding the Fourth Proportional to 28,715.23, 39,627.01 and 16,139.98

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Solution

The fourth proportional to 28,715.23, 39,627.01 and 16,139.98 is: 22,273.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,715.23 : 39,627.01 = 16,139.98 : x
  2. Step 2: Convert to fraction form
    28,715.23/39,627.01 = 16,139.98/x
  3. Step 3: Cross multiply
    28,715.23x = 39,627.01 × 16,139.98
  4. Step 4: Simplify right side
    28,715.23x = 639,579,148.86
  5. Step 5: Solve for x
    x = 639,579,148.86/28,715.23
  6. Step 6: Final answer
    x = 22,273.17

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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.