Home / 14,123.79-19,490.64-7,836.19

Finding the Fourth Proportional to 14,123.79, 19,490.64 and 7,836.19

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Solution

The fourth proportional to 14,123.79, 19,490.64 and 7,836.19 is: 10,813.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,123.79 : 19,490.64 = 7,836.19 : x
  2. Step 2: Convert to fraction form
    14,123.79/19,490.64 = 7,836.19/x
  3. Step 3: Cross multiply
    14,123.79x = 19,490.64 × 7,836.19
  4. Step 4: Simplify right side
    14,123.79x = 152,732,319.08
  5. Step 5: Solve for x
    x = 152,732,319.08/14,123.79
  6. Step 6: Final answer
    x = 10,813.83

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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.