Home / 28,389.88-39,178.08-16,460.16

Finding the Fourth Proportional to 28,389.88, 39,178.08 and 16,460.16

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Solution

The fourth proportional to 28,389.88, 39,178.08 and 16,460.16 is: 22,715.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,389.88 : 39,178.08 = 16,460.16 : x
  2. Step 2: Convert to fraction form
    28,389.88/39,178.08 = 16,460.16/x
  3. Step 3: Cross multiply
    28,389.88x = 39,178.08 × 16,460.16
  4. Step 4: Simplify right side
    28,389.88x = 644,877,465.29
  5. Step 5: Solve for x
    x = 644,877,465.29/28,389.88
  6. Step 6: Final answer
    x = 22,715.05

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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.