Home / 30,054.18-45,088.65-21,186.84

Finding the Fourth Proportional to 30,054.18, 45,088.65 and 21,186.84

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Solution

The fourth proportional to 30,054.18, 45,088.65 and 21,186.84 is: 31,785.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,054.18 : 45,088.65 = 21,186.84 : x
  2. Step 2: Convert to fraction form
    30,054.18/45,088.65 = 21,186.84/x
  3. Step 3: Cross multiply
    30,054.18x = 45,088.65 × 21,186.84
  4. Step 4: Simplify right side
    30,054.18x = 955,286,013.37
  5. Step 5: Solve for x
    x = 955,286,013.37/30,054.18
  6. Step 6: Final answer
    x = 31,785.46

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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.