Home / 28,186.10-42,248.64-18,332.45

Finding the Fourth Proportional to 28,186.10, 42,248.64 and 18,332.45

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Solution

The fourth proportional to 28,186.10, 42,248.64 and 18,332.45 is: 27,478.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,186.10 : 42,248.64 = 18,332.45 : x
  2. Step 2: Convert to fraction form
    28,186.10/42,248.64 = 18,332.45/x
  3. Step 3: Cross multiply
    28,186.10x = 42,248.64 × 18,332.45
  4. Step 4: Simplify right side
    28,186.10x = 774,521,080.37
  5. Step 5: Solve for x
    x = 774,521,080.37/28,186.10
  6. Step 6: Final answer
    x = 27,478.83

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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.