Home / 15,101.04-20,838.40-8,386.32

Finding the Fourth Proportional to 15,101.04, 20,838.40 and 8,386.32

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Solution

The fourth proportional to 15,101.04, 20,838.40 and 8,386.32 is: 11,572.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,101.04 : 20,838.40 = 8,386.32 : x
  2. Step 2: Convert to fraction form
    15,101.04/20,838.40 = 8,386.32/x
  3. Step 3: Cross multiply
    15,101.04x = 20,838.40 × 8,386.32
  4. Step 4: Simplify right side
    15,101.04x = 174,757,490.69
  5. Step 5: Solve for x
    x = 174,757,490.69/15,101.04
  6. Step 6: Final answer
    x = 11,572.55

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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.