Home / 28,774.40-39,714.80-19,337.50

Finding the Fourth Proportional to 28,774.40, 39,714.80 and 19,337.50

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Solution

The fourth proportional to 28,774.40, 39,714.80 and 19,337.50 is: 26,689.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,774.40 : 39,714.80 = 19,337.50 : x
  2. Step 2: Convert to fraction form
    28,774.40/39,714.80 = 19,337.50/x
  3. Step 3: Cross multiply
    28,774.40x = 39,714.80 × 19,337.50
  4. Step 4: Simplify right side
    28,774.40x = 767,984,746.43
  5. Step 5: Solve for x
    x = 767,984,746.43/28,774.40
  6. Step 6: Final answer
    x = 26,689.86

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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.