Home / 28,931.75-39,923.93-16,182.72

Finding the Fourth Proportional to 28,931.75, 39,923.93 and 16,182.72

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Solution

The fourth proportional to 28,931.75, 39,923.93 and 16,182.72 is: 22,331.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,931.75 : 39,923.93 = 16,182.72 : x
  2. Step 2: Convert to fraction form
    28,931.75/39,923.93 = 16,182.72/x
  3. Step 3: Cross multiply
    28,931.75x = 39,923.93 × 16,182.72
  4. Step 4: Simplify right side
    28,931.75x = 646,077,699.58
  5. Step 5: Solve for x
    x = 646,077,699.58/28,931.75
  6. Step 6: Final answer
    x = 22,331.10

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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.