Home / 28,386.32-42,609.51-15,916.77

Finding the Fourth Proportional to 28,386.32, 42,609.51 and 15,916.77

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Solution

The fourth proportional to 28,386.32, 42,609.51 and 15,916.77 is: 23,892.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,386.32 : 42,609.51 = 15,916.77 : x
  2. Step 2: Convert to fraction form
    28,386.32/42,609.51 = 15,916.77/x
  3. Step 3: Cross multiply
    28,386.32x = 42,609.51 × 15,916.77
  4. Step 4: Simplify right side
    28,386.32x = 678,205,770.48
  5. Step 5: Solve for x
    x = 678,205,770.48/28,386.32
  6. Step 6: Final answer
    x = 23,892.00

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.