Home / 31,442.08-47,153.10-10,378.20

Finding the Fourth Proportional to 31,442.08, 47,153.10 and 10,378.20

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Solution

The fourth proportional to 31,442.08, 47,153.10 and 10,378.20 is: 15,563.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,442.08 : 47,153.10 = 10,378.20 : x
  2. Step 2: Convert to fraction form
    31,442.08/47,153.10 = 10,378.20/x
  3. Step 3: Cross multiply
    31,442.08x = 47,153.10 × 10,378.20
  4. Step 4: Simplify right side
    31,442.08x = 489,364,302.42
  5. Step 5: Solve for x
    x = 489,364,302.42/31,442.08
  6. Step 6: Final answer
    x = 15,563.99

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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.