Home / 13,547.49-18,696.26-7,578.80

Finding the Fourth Proportional to 13,547.49, 18,696.26 and 7,578.80

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Solution

The fourth proportional to 13,547.49, 18,696.26 and 7,578.80 is: 10,459.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,547.49 : 18,696.26 = 7,578.80 : x
  2. Step 2: Convert to fraction form
    13,547.49/18,696.26 = 7,578.80/x
  3. Step 3: Cross multiply
    13,547.49x = 18,696.26 × 7,578.80
  4. Step 4: Simplify right side
    13,547.49x = 141,695,280.98
  5. Step 5: Solve for x
    x = 141,695,280.98/13,547.49
  6. Step 6: Final answer
    x = 10,459.15

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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.