Home / 19,779.32-29,680.65-7,308.17

Finding the Fourth Proportional to 19,779.32, 29,680.65 and 7,308.17

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Solution

The fourth proportional to 19,779.32, 29,680.65 and 7,308.17 is: 10,966.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,779.32 : 29,680.65 = 7,308.17 : x
  2. Step 2: Convert to fraction form
    19,779.32/29,680.65 = 7,308.17/x
  3. Step 3: Cross multiply
    19,779.32x = 29,680.65 × 7,308.17
  4. Step 4: Simplify right side
    19,779.32x = 216,911,337.52
  5. Step 5: Solve for x
    x = 216,911,337.52/19,779.32
  6. Step 6: Final answer
    x = 10,966.57

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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.