Home / 31,430.05-47,130.27-11,425.47

Finding the Fourth Proportional to 31,430.05, 47,130.27 and 11,425.47

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Solution

The fourth proportional to 31,430.05, 47,130.27 and 11,425.47 is: 17,132.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,430.05 : 47,130.27 = 11,425.47 : x
  2. Step 2: Convert to fraction form
    31,430.05/47,130.27 = 11,425.47/x
  3. Step 3: Cross multiply
    31,430.05x = 47,130.27 × 11,425.47
  4. Step 4: Simplify right side
    31,430.05x = 538,485,485.98
  5. Step 5: Solve for x
    x = 538,485,485.98/31,430.05
  6. Step 6: Final answer
    x = 17,132.82

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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.