Home / 15,103.28-20,852.10-9,727.74

Finding the Fourth Proportional to 15,103.28, 20,852.10 and 9,727.74

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Solution

The fourth proportional to 15,103.28, 20,852.10 and 9,727.74 is: 13,430.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,103.28 : 20,852.10 = 9,727.74 : x
  2. Step 2: Convert to fraction form
    15,103.28/20,852.10 = 9,727.74/x
  3. Step 3: Cross multiply
    15,103.28x = 20,852.10 × 9,727.74
  4. Step 4: Simplify right side
    15,103.28x = 202,843,807.25
  5. Step 5: Solve for x
    x = 202,843,807.25/15,103.28
  6. Step 6: Final answer
    x = 13,430.45

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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.