Home / 15,409.36-21,258.15-9,032.72

Finding the Fourth Proportional to 15,409.36, 21,258.15 and 9,032.72

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Solution

The fourth proportional to 15,409.36, 21,258.15 and 9,032.72 is: 12,461.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,409.36 : 21,258.15 = 9,032.72 : x
  2. Step 2: Convert to fraction form
    15,409.36/21,258.15 = 9,032.72/x
  3. Step 3: Cross multiply
    15,409.36x = 21,258.15 × 9,032.72
  4. Step 4: Simplify right side
    15,409.36x = 192,018,776.50
  5. Step 5: Solve for x
    x = 192,018,776.50/15,409.36
  6. Step 6: Final answer
    x = 12,461.17

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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.