Home / 31,981.60-47,950.80-16,386.40

Finding the Fourth Proportional to 31,981.60, 47,950.80 and 16,386.40

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Solution

The fourth proportional to 31,981.60, 47,950.80 and 16,386.40 is: 24,568.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,981.60 : 47,950.80 = 16,386.40 : x
  2. Step 2: Convert to fraction form
    31,981.60/47,950.80 = 16,386.40/x
  3. Step 3: Cross multiply
    31,981.60x = 47,950.80 × 16,386.40
  4. Step 4: Simplify right side
    31,981.60x = 785,740,989.12
  5. Step 5: Solve for x
    x = 785,740,989.12/31,981.60
  6. Step 6: Final answer
    x = 24,568.53

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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.