Home / 15,109.47-20,844.38-10,068.78

Finding the Fourth Proportional to 15,109.47, 20,844.38 and 10,068.78

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Solution

The fourth proportional to 15,109.47, 20,844.38 and 10,068.78 is: 13,890.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,109.47 : 20,844.38 = 10,068.78 : x
  2. Step 2: Convert to fraction form
    15,109.47/20,844.38 = 10,068.78/x
  3. Step 3: Cross multiply
    15,109.47x = 20,844.38 × 10,068.78
  4. Step 4: Simplify right side
    15,109.47x = 209,877,426.11
  5. Step 5: Solve for x
    x = 209,877,426.11/15,109.47
  6. Step 6: Final answer
    x = 13,890.46

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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.