Home / 31,417.79-47,130.12-13,636.23

Finding the Fourth Proportional to 31,417.79, 47,130.12 and 13,636.23

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Solution

The fourth proportional to 31,417.79, 47,130.12 and 13,636.23 is: 20,455.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,417.79 : 47,130.12 = 13,636.23 : x
  2. Step 2: Convert to fraction form
    31,417.79/47,130.12 = 13,636.23/x
  3. Step 3: Cross multiply
    31,417.79x = 47,130.12 × 13,636.23
  4. Step 4: Simplify right side
    31,417.79x = 642,677,156.25
  5. Step 5: Solve for x
    x = 642,677,156.25/31,417.79
  6. Step 6: Final answer
    x = 20,455.83

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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.