Home / 10,665.19-15,973.35-5,122.45

Finding the Fourth Proportional to 10,665.19, 15,973.35 and 5,122.45

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Solution

The fourth proportional to 10,665.19, 15,973.35 and 5,122.45 is: 7,671.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,665.19 : 15,973.35 = 5,122.45 : x
  2. Step 2: Convert to fraction form
    10,665.19/15,973.35 = 5,122.45/x
  3. Step 3: Cross multiply
    10,665.19x = 15,973.35 × 5,122.45
  4. Step 4: Simplify right side
    10,665.19x = 81,822,686.71
  5. Step 5: Solve for x
    x = 81,822,686.71/10,665.19
  6. Step 6: Final answer
    x = 7,671.94

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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.