Home / 28,270.90-42,406.35-8,547.40

Finding the Fourth Proportional to 28,270.90, 42,406.35 and 8,547.40

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Solution

The fourth proportional to 28,270.90, 42,406.35 and 8,547.40 is: 12,821.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,270.90 : 42,406.35 = 8,547.40 : x
  2. Step 2: Convert to fraction form
    28,270.90/42,406.35 = 8,547.40/x
  3. Step 3: Cross multiply
    28,270.90x = 42,406.35 × 8,547.40
  4. Step 4: Simplify right side
    28,270.90x = 362,464,035.99
  5. Step 5: Solve for x
    x = 362,464,035.99/28,270.90
  6. Step 6: Final answer
    x = 12,821.10

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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.