Home / 16,981.95-23,434.67-9,428.05

Finding the Fourth Proportional to 16,981.95, 23,434.67 and 9,428.05

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Solution

The fourth proportional to 16,981.95, 23,434.67 and 9,428.05 is: 13,010.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,981.95 : 23,434.67 = 9,428.05 : x
  2. Step 2: Convert to fraction form
    16,981.95/23,434.67 = 9,428.05/x
  3. Step 3: Cross multiply
    16,981.95x = 23,434.67 × 9,428.05
  4. Step 4: Simplify right side
    16,981.95x = 220,943,108.50
  5. Step 5: Solve for x
    x = 220,943,108.50/16,981.95
  6. Step 6: Final answer
    x = 13,010.46

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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.