Home / 28,878.81-40,056.64-28,110.71

Finding the Fourth Proportional to 28,878.81, 40,056.64 and 28,110.71

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Solution

The fourth proportional to 28,878.81, 40,056.64 and 28,110.71 is: 38,991.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,878.81 : 40,056.64 = 28,110.71 : x
  2. Step 2: Convert to fraction form
    28,878.81/40,056.64 = 28,110.71/x
  3. Step 3: Cross multiply
    28,878.81x = 40,056.64 × 28,110.71
  4. Step 4: Simplify right side
    28,878.81x = 1,126,020,643.34
  5. Step 5: Solve for x
    x = 1,126,020,643.34/28,878.81
  6. Step 6: Final answer
    x = 38,991.24

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.