Home / 31,603.17-47,391.57-12,870.45

Finding the Fourth Proportional to 31,603.17, 47,391.57 and 12,870.45

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Solution

The fourth proportional to 31,603.17, 47,391.57 and 12,870.45 is: 19,300.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,603.17 : 47,391.57 = 12,870.45 : x
  2. Step 2: Convert to fraction form
    31,603.17/47,391.57 = 12,870.45/x
  3. Step 3: Cross multiply
    31,603.17x = 47,391.57 × 12,870.45
  4. Step 4: Simplify right side
    31,603.17x = 609,950,832.11
  5. Step 5: Solve for x
    x = 609,950,832.11/31,603.17
  6. Step 6: Final answer
    x = 19,300.31

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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.