Home / 13,478.39-18,599.99-7,510.31

Finding the Fourth Proportional to 13,478.39, 18,599.99 and 7,510.31

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Solution

The fourth proportional to 13,478.39, 18,599.99 and 7,510.31 is: 10,364.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,478.39 : 18,599.99 = 7,510.31 : x
  2. Step 2: Convert to fraction form
    13,478.39/18,599.99 = 7,510.31/x
  3. Step 3: Cross multiply
    13,478.39x = 18,599.99 × 7,510.31
  4. Step 4: Simplify right side
    13,478.39x = 139,691,690.90
  5. Step 5: Solve for x
    x = 139,691,690.90/13,478.39
  6. Step 6: Final answer
    x = 10,364.12

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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.