Home / 12,258.30-16,921.50-9,275.06

Finding the Fourth Proportional to 12,258.30, 16,921.50 and 9,275.06

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Solution

The fourth proportional to 12,258.30, 16,921.50 and 9,275.06 is: 12,803.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,258.30 : 16,921.50 = 9,275.06 : x
  2. Step 2: Convert to fraction form
    12,258.30/16,921.50 = 9,275.06/x
  3. Step 3: Cross multiply
    12,258.30x = 16,921.50 × 9,275.06
  4. Step 4: Simplify right side
    12,258.30x = 156,947,927.79
  5. Step 5: Solve for x
    x = 156,947,927.79/12,258.30
  6. Step 6: Final answer
    x = 12,803.40

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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.