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Finding the Fourth Proportional to 56,281.52, 84,426.12 and 18,840.08

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Solution

The fourth proportional to 56,281.52, 84,426.12 and 18,840.08 is: 28,261.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,281.52 : 84,426.12 = 18,840.08 : x
  2. Step 2: Convert to fraction form
    56,281.52/84,426.12 = 18,840.08/x
  3. Step 3: Cross multiply
    56,281.52x = 84,426.12 × 18,840.08
  4. Step 4: Simplify right side
    56,281.52x = 1,590,594,432.76
  5. Step 5: Solve for x
    x = 1,590,594,432.76/56,281.52
  6. Step 6: Final answer
    x = 28,261.40

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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.