Home / 15,689.48-21,652.26-9,316.40

Finding the Fourth Proportional to 15,689.48, 21,652.26 and 9,316.40

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Solution

The fourth proportional to 15,689.48, 21,652.26 and 9,316.40 is: 12,857.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,689.48 : 21,652.26 = 9,316.40 : x
  2. Step 2: Convert to fraction form
    15,689.48/21,652.26 = 9,316.40/x
  3. Step 3: Cross multiply
    15,689.48x = 21,652.26 × 9,316.40
  4. Step 4: Simplify right side
    15,689.48x = 201,721,115.06
  5. Step 5: Solve for x
    x = 201,721,115.06/15,689.48
  6. Step 6: Final answer
    x = 12,857.09

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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.