Home / 15,657.63-21,606.75-8,851.47

Finding the Fourth Proportional to 15,657.63, 21,606.75 and 8,851.47

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Solution

The fourth proportional to 15,657.63, 21,606.75 and 8,851.47 is: 12,214.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,657.63 : 21,606.75 = 8,851.47 : x
  2. Step 2: Convert to fraction form
    15,657.63/21,606.75 = 8,851.47/x
  3. Step 3: Cross multiply
    15,657.63x = 21,606.75 × 8,851.47
  4. Step 4: Simplify right side
    15,657.63x = 191,251,499.42
  5. Step 5: Solve for x
    x = 191,251,499.42/15,657.63
  6. Step 6: Final answer
    x = 12,214.59

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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.