Home / 30,779.06-42,475.10-16,631.91

Finding the Fourth Proportional to 30,779.06, 42,475.10 and 16,631.91

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Solution

The fourth proportional to 30,779.06, 42,475.10 and 16,631.91 is: 22,952.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,779.06 : 42,475.10 = 16,631.91 : x
  2. Step 2: Convert to fraction form
    30,779.06/42,475.10 = 16,631.91/x
  3. Step 3: Cross multiply
    30,779.06x = 42,475.10 × 16,631.91
  4. Step 4: Simplify right side
    30,779.06x = 706,441,957.28
  5. Step 5: Solve for x
    x = 706,441,957.28/30,779.06
  6. Step 6: Final answer
    x = 22,952.04

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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.