Home / 28,943.03-39,903.10-20,869.93

Finding the Fourth Proportional to 28,943.03, 39,903.10 and 20,869.93

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Solution

The fourth proportional to 28,943.03, 39,903.10 and 20,869.93 is: 28,772.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,943.03 : 39,903.10 = 20,869.93 : x
  2. Step 2: Convert to fraction form
    28,943.03/39,903.10 = 20,869.93/x
  3. Step 3: Cross multiply
    28,943.03x = 39,903.10 × 20,869.93
  4. Step 4: Simplify right side
    28,943.03x = 832,774,901.49
  5. Step 5: Solve for x
    x = 832,774,901.49/28,943.03
  6. Step 6: Final answer
    x = 28,772.90

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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.