Home / 18,885.56-28,332.59-6,405.89

Finding the Fourth Proportional to 18,885.56, 28,332.59 and 6,405.89

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Solution

The fourth proportional to 18,885.56, 28,332.59 and 6,405.89 is: 9,610.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,885.56 : 28,332.59 = 6,405.89 : x
  2. Step 2: Convert to fraction form
    18,885.56/28,332.59 = 6,405.89/x
  3. Step 3: Cross multiply
    18,885.56x = 28,332.59 × 6,405.89
  4. Step 4: Simplify right side
    18,885.56x = 181,495,281.26
  5. Step 5: Solve for x
    x = 181,495,281.26/18,885.56
  6. Step 6: Final answer
    x = 9,610.27

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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.