Home / 13,547.82-18,695.10-7,578.45

Finding the Fourth Proportional to 13,547.82, 18,695.10 and 7,578.45

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Solution

The fourth proportional to 13,547.82, 18,695.10 and 7,578.45 is: 10,457.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,547.82 : 18,695.10 = 7,578.45 : x
  2. Step 2: Convert to fraction form
    13,547.82/18,695.10 = 7,578.45/x
  3. Step 3: Cross multiply
    13,547.82x = 18,695.10 × 7,578.45
  4. Step 4: Simplify right side
    13,547.82x = 141,679,880.60
  5. Step 5: Solve for x
    x = 141,679,880.60/13,547.82
  6. Step 6: Final answer
    x = 10,457.76

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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.