Home / 28,943.02-39,903.08-20,869.92

Finding the Fourth Proportional to 28,943.02, 39,903.08 and 20,869.92

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Solution

The fourth proportional to 28,943.02, 39,903.08 and 20,869.92 is: 28,772.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,943.02 : 39,903.08 = 20,869.92 : x
  2. Step 2: Convert to fraction form
    28,943.02/39,903.08 = 20,869.92/x
  3. Step 3: Cross multiply
    28,943.02x = 39,903.08 × 20,869.92
  4. Step 4: Simplify right side
    28,943.02x = 832,773,859.45
  5. Step 5: Solve for x
    x = 832,773,859.45/28,943.02
  6. Step 6: Final answer
    x = 28,772.88

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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.