Home / 20,557.30-28,362.81-14,186.02

Finding the Fourth Proportional to 20,557.30, 28,362.81 and 14,186.02

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Solution

The fourth proportional to 20,557.30, 28,362.81 and 14,186.02 is: 19,572.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,557.30 : 28,362.81 = 14,186.02 : x
  2. Step 2: Convert to fraction form
    20,557.30/28,362.81 = 14,186.02/x
  3. Step 3: Cross multiply
    20,557.30x = 28,362.81 × 14,186.02
  4. Step 4: Simplify right side
    20,557.30x = 402,355,389.92
  5. Step 5: Solve for x
    x = 402,355,389.92/20,557.30
  6. Step 6: Final answer
    x = 19,572.38

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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.