Home / 18,117.59-27,178.70-6,430.91

Finding the Fourth Proportional to 18,117.59, 27,178.70 and 6,430.91

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Solution

The fourth proportional to 18,117.59, 27,178.70 and 6,430.91 is: 9,647.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,117.59 : 27,178.70 = 6,430.91 : x
  2. Step 2: Convert to fraction form
    18,117.59/27,178.70 = 6,430.91/x
  3. Step 3: Cross multiply
    18,117.59x = 27,178.70 × 6,430.91
  4. Step 4: Simplify right side
    18,117.59x = 174,783,605.57
  5. Step 5: Solve for x
    x = 174,783,605.57/18,117.59
  6. Step 6: Final answer
    x = 9,647.18

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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.