Home / 28,266.90-42,400.35-8,543.40

Finding the Fourth Proportional to 28,266.90, 42,400.35 and 8,543.40

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Solution

The fourth proportional to 28,266.90, 42,400.35 and 8,543.40 is: 12,815.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,266.90 : 42,400.35 = 8,543.40 : x
  2. Step 2: Convert to fraction form
    28,266.90/42,400.35 = 8,543.40/x
  3. Step 3: Cross multiply
    28,266.90x = 42,400.35 × 8,543.40
  4. Step 4: Simplify right side
    28,266.90x = 362,243,150.19
  5. Step 5: Solve for x
    x = 362,243,150.19/28,266.90
  6. Step 6: Final answer
    x = 12,815.10

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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.