Home / 28,381.83-42,572.73-13,385.46

Finding the Fourth Proportional to 28,381.83, 42,572.73 and 13,385.46

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Solution

The fourth proportional to 28,381.83, 42,572.73 and 13,385.46 is: 20,078.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,381.83 : 42,572.73 = 13,385.46 : x
  2. Step 2: Convert to fraction form
    28,381.83/42,572.73 = 13,385.46/x
  3. Step 3: Cross multiply
    28,381.83x = 42,572.73 × 13,385.46
  4. Step 4: Simplify right side
    28,381.83x = 569,855,574.51
  5. Step 5: Solve for x
    x = 569,855,574.51/28,381.83
  6. Step 6: Final answer
    x = 20,078.18

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.