Home / 13,491.02-18,640.46-9,706.70

Finding the Fourth Proportional to 13,491.02, 18,640.46 and 9,706.70

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Solution

The fourth proportional to 13,491.02, 18,640.46 and 9,706.70 is: 13,411.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,491.02 : 18,640.46 = 9,706.70 : x
  2. Step 2: Convert to fraction form
    13,491.02/18,640.46 = 9,706.70/x
  3. Step 3: Cross multiply
    13,491.02x = 18,640.46 × 9,706.70
  4. Step 4: Simplify right side
    13,491.02x = 180,937,423.95
  5. Step 5: Solve for x
    x = 180,937,423.95/13,491.02
  6. Step 6: Final answer
    x = 13,411.69

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.