Home / 15,148.01-20,900.75-9,178.40

Finding the Fourth Proportional to 15,148.01, 20,900.75 and 9,178.40

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Solution

The fourth proportional to 15,148.01, 20,900.75 and 9,178.40 is: 12,664.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,148.01 : 20,900.75 = 9,178.40 : x
  2. Step 2: Convert to fraction form
    15,148.01/20,900.75 = 9,178.40/x
  3. Step 3: Cross multiply
    15,148.01x = 20,900.75 × 9,178.40
  4. Step 4: Simplify right side
    15,148.01x = 191,835,293.40
  5. Step 5: Solve for x
    x = 191,835,293.40/15,148.01
  6. Step 6: Final answer
    x = 12,664.06

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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.