Home / 15,409.08-21,264.51-8,335.48

Finding the Fourth Proportional to 15,409.08, 21,264.51 and 8,335.48

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Solution

The fourth proportional to 15,409.08, 21,264.51 and 8,335.48 is: 11,502.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,409.08 : 21,264.51 = 8,335.48 : x
  2. Step 2: Convert to fraction form
    15,409.08/21,264.51 = 8,335.48/x
  3. Step 3: Cross multiply
    15,409.08x = 21,264.51 × 8,335.48
  4. Step 4: Simplify right side
    15,409.08x = 177,249,856.14
  5. Step 5: Solve for x
    x = 177,249,856.14/15,409.08
  6. Step 6: Final answer
    x = 11,502.95

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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.