Home / 14,688.16-20,269.29-8,400.13

Finding the Fourth Proportional to 14,688.16, 20,269.29 and 8,400.13

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Solution

The fourth proportional to 14,688.16, 20,269.29 and 8,400.13 is: 11,591.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,688.16 : 20,269.29 = 8,400.13 : x
  2. Step 2: Convert to fraction form
    14,688.16/20,269.29 = 8,400.13/x
  3. Step 3: Cross multiply
    14,688.16x = 20,269.29 × 8,400.13
  4. Step 4: Simplify right side
    14,688.16x = 170,264,671.01
  5. Step 5: Solve for x
    x = 170,264,671.01/14,688.16
  6. Step 6: Final answer
    x = 11,591.97

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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.