Home / 15,656.16-21,607.73-9,689.75

Finding the Fourth Proportional to 15,656.16, 21,607.73 and 9,689.75

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Solution

The fourth proportional to 15,656.16, 21,607.73 and 9,689.75 is: 13,373.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,656.16 : 21,607.73 = 9,689.75 : x
  2. Step 2: Convert to fraction form
    15,656.16/21,607.73 = 9,689.75/x
  3. Step 3: Cross multiply
    15,656.16x = 21,607.73 × 9,689.75
  4. Step 4: Simplify right side
    15,656.16x = 209,373,453.32
  5. Step 5: Solve for x
    x = 209,373,453.32/15,656.16
  6. Step 6: Final answer
    x = 13,373.23

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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.