Home / 18,897.40-28,347.48-6,412.36

Finding the Fourth Proportional to 18,897.40, 28,347.48 and 6,412.36

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Solution

The fourth proportional to 18,897.40, 28,347.48 and 6,412.36 is: 9,619.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,897.40 : 28,347.48 = 6,412.36 : x
  2. Step 2: Convert to fraction form
    18,897.40/28,347.48 = 6,412.36/x
  3. Step 3: Cross multiply
    18,897.40x = 28,347.48 × 6,412.36
  4. Step 4: Simplify right side
    18,897.40x = 181,774,246.85
  5. Step 5: Solve for x
    x = 181,774,246.85/18,897.40
  6. Step 6: Final answer
    x = 9,619.01

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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.