Home / 15,405.02-21,264.37-9,117.38

Finding the Fourth Proportional to 15,405.02, 21,264.37 and 9,117.38

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Solution

The fourth proportional to 15,405.02, 21,264.37 and 9,117.38 is: 12,585.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,405.02 : 21,264.37 = 9,117.38 : x
  2. Step 2: Convert to fraction form
    15,405.02/21,264.37 = 9,117.38/x
  3. Step 3: Cross multiply
    15,405.02x = 21,264.37 × 9,117.38
  4. Step 4: Simplify right side
    15,405.02x = 193,875,341.75
  5. Step 5: Solve for x
    x = 193,875,341.75/15,405.02
  6. Step 6: Final answer
    x = 12,585.21

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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.