Home / 13,139.69-19,681.51-10,630.11

Finding the Fourth Proportional to 13,139.69, 19,681.51 and 10,630.11

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Solution

The fourth proportional to 13,139.69, 19,681.51 and 10,630.11 is: 15,922.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,139.69 : 19,681.51 = 10,630.11 : x
  2. Step 2: Convert to fraction form
    13,139.69/19,681.51 = 10,630.11/x
  3. Step 3: Cross multiply
    13,139.69x = 19,681.51 × 10,630.11
  4. Step 4: Simplify right side
    13,139.69x = 209,216,593.64
  5. Step 5: Solve for x
    x = 209,216,593.64/13,139.69
  6. Step 6: Final answer
    x = 15,922.49

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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.