Home / 30,828.29-42,543.03-16,681.13

Finding the Fourth Proportional to 30,828.29, 42,543.03 and 16,681.13

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Solution

The fourth proportional to 30,828.29, 42,543.03 and 16,681.13 is: 23,019.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,828.29 : 42,543.03 = 16,681.13 : x
  2. Step 2: Convert to fraction form
    30,828.29/42,543.03 = 16,681.13/x
  3. Step 3: Cross multiply
    30,828.29x = 42,543.03 × 16,681.13
  4. Step 4: Simplify right side
    30,828.29x = 709,665,601.31
  5. Step 5: Solve for x
    x = 709,665,601.31/30,828.29
  6. Step 6: Final answer
    x = 23,019.95

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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.