Home / 28,389.90-39,178.07-16,460.16

Finding the Fourth Proportional to 28,389.90, 39,178.07 and 16,460.16

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Solution

The fourth proportional to 28,389.90, 39,178.07 and 16,460.16 is: 22,715.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,389.90 : 39,178.07 = 16,460.16 : x
  2. Step 2: Convert to fraction form
    28,389.90/39,178.07 = 16,460.16/x
  3. Step 3: Cross multiply
    28,389.90x = 39,178.07 × 16,460.16
  4. Step 4: Simplify right side
    28,389.90x = 644,877,300.69
  5. Step 5: Solve for x
    x = 644,877,300.69/28,389.90
  6. Step 6: Final answer
    x = 22,715.03

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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.