Home / 31,024.84-42,821.94-19,840.36

Finding the Fourth Proportional to 31,024.84, 42,821.94 and 19,840.36

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Solution

The fourth proportional to 31,024.84, 42,821.94 and 19,840.36 is: 27,384.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,024.84 : 42,821.94 = 19,840.36 : x
  2. Step 2: Convert to fraction form
    31,024.84/42,821.94 = 19,840.36/x
  3. Step 3: Cross multiply
    31,024.84x = 42,821.94 × 19,840.36
  4. Step 4: Simplify right side
    31,024.84x = 849,602,705.50
  5. Step 5: Solve for x
    x = 849,602,705.50/31,024.84
  6. Step 6: Final answer
    x = 27,384.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.