Home / 15,689.63-21,653.96-9,402.59

Finding the Fourth Proportional to 15,689.63, 21,653.96 and 9,402.59

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Solution

The fourth proportional to 15,689.63, 21,653.96 and 9,402.59 is: 12,976.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,689.63 : 21,653.96 = 9,402.59 : x
  2. Step 2: Convert to fraction form
    15,689.63/21,653.96 = 9,402.59/x
  3. Step 3: Cross multiply
    15,689.63x = 21,653.96 × 9,402.59
  4. Step 4: Simplify right side
    15,689.63x = 203,603,307.76
  5. Step 5: Solve for x
    x = 203,603,307.76/15,689.63
  6. Step 6: Final answer
    x = 12,976.93

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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.