Home / 19,779.60-29,666.20-7,305.50

Finding the Fourth Proportional to 19,779.60, 29,666.20 and 7,305.50

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Solution

The fourth proportional to 19,779.60, 29,666.20 and 7,305.50 is: 10,957.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,779.60 : 29,666.20 = 7,305.50 : x
  2. Step 2: Convert to fraction form
    19,779.60/29,666.20 = 7,305.50/x
  3. Step 3: Cross multiply
    19,779.60x = 29,666.20 × 7,305.50
  4. Step 4: Simplify right side
    19,779.60x = 216,726,424.10
  5. Step 5: Solve for x
    x = 216,726,424.10/19,779.60
  6. Step 6: Final answer
    x = 10,957.07

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.