Home / 28,369.09-39,156.24-16,430.50

Finding the Fourth Proportional to 28,369.09, 39,156.24 and 16,430.50

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Solution

The fourth proportional to 28,369.09, 39,156.24 and 16,430.50 is: 22,678.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,369.09 : 39,156.24 = 16,430.50 : x
  2. Step 2: Convert to fraction form
    28,369.09/39,156.24 = 16,430.50/x
  3. Step 3: Cross multiply
    28,369.09x = 39,156.24 × 16,430.50
  4. Step 4: Simplify right side
    28,369.09x = 643,356,601.32
  5. Step 5: Solve for x
    x = 643,356,601.32/28,369.09
  6. Step 6: Final answer
    x = 22,678.08

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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.