Home / 14,721.75-20,316.02-8,434.53

Finding the Fourth Proportional to 14,721.75, 20,316.02 and 8,434.53

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Solution

The fourth proportional to 14,721.75, 20,316.02 and 8,434.53 is: 11,639.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,721.75 : 20,316.02 = 8,434.53 : x
  2. Step 2: Convert to fraction form
    14,721.75/20,316.02 = 8,434.53/x
  3. Step 3: Cross multiply
    14,721.75x = 20,316.02 × 8,434.53
  4. Step 4: Simplify right side
    14,721.75x = 171,356,080.17
  5. Step 5: Solve for x
    x = 171,356,080.17/14,721.75
  6. Step 6: Final answer
    x = 11,639.65

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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.