Home / 15,434.02-21,298.86-8,721.82

Finding the Fourth Proportional to 15,434.02, 21,298.86 and 8,721.82

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Solution

The fourth proportional to 15,434.02, 21,298.86 and 8,721.82 is: 12,036.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,434.02 : 21,298.86 = 8,721.82 : x
  2. Step 2: Convert to fraction form
    15,434.02/21,298.86 = 8,721.82/x
  3. Step 3: Cross multiply
    15,434.02x = 21,298.86 × 8,721.82
  4. Step 4: Simplify right side
    15,434.02x = 185,764,823.13
  5. Step 5: Solve for x
    x = 185,764,823.13/15,434.02
  6. Step 6: Final answer
    x = 12,036.06

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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.