Home / 18,971.04-28,432.08-9,089.76

Finding the Fourth Proportional to 18,971.04, 28,432.08 and 9,089.76

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Solution

The fourth proportional to 18,971.04, 28,432.08 and 9,089.76 is: 13,622.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,971.04 : 28,432.08 = 9,089.76 : x
  2. Step 2: Convert to fraction form
    18,971.04/28,432.08 = 9,089.76/x
  3. Step 3: Cross multiply
    18,971.04x = 28,432.08 × 9,089.76
  4. Step 4: Simplify right side
    18,971.04x = 258,440,783.50
  5. Step 5: Solve for x
    x = 258,440,783.50/18,971.04
  6. Step 6: Final answer
    x = 13,622.91

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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.