Home / 30,916.08-42,606-28,401.84

Finding the Fourth Proportional to 30,916.08, 42,606 and 28,401.84

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Solution

The fourth proportional to 30,916.08, 42,606 and 28,401.84 is: 39,141.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,916.08 : 42,606 = 28,401.84 : x
  2. Step 2: Convert to fraction form
    30,916.08/42,606 = 28,401.84/x
  3. Step 3: Cross multiply
    30,916.08x = 42,606 × 28,401.84
  4. Step 4: Simplify right side
    30,916.08x = 1,210,088,795.04
  5. Step 5: Solve for x
    x = 1,210,088,795.04/30,916.08
  6. Step 6: Final answer
    x = 39,141.08

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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.