Home / 14,177.81-19,565.40-7,890.05

Finding the Fourth Proportional to 14,177.81, 19,565.40 and 7,890.05

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Solution

The fourth proportional to 14,177.81, 19,565.40 and 7,890.05 is: 10,888.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,177.81 : 19,565.40 = 7,890.05 : x
  2. Step 2: Convert to fraction form
    14,177.81/19,565.40 = 7,890.05/x
  3. Step 3: Cross multiply
    14,177.81x = 19,565.40 × 7,890.05
  4. Step 4: Simplify right side
    14,177.81x = 154,371,886.44
  5. Step 5: Solve for x
    x = 154,371,886.44/14,177.81
  6. Step 6: Final answer
    x = 10,888.28

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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.