Home / 28,358.57-42,547.32-12,561.45

Finding the Fourth Proportional to 28,358.57, 42,547.32 and 12,561.45

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Solution

The fourth proportional to 28,358.57, 42,547.32 and 12,561.45 is: 18,846.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,358.57 : 42,547.32 = 12,561.45 : x
  2. Step 2: Convert to fraction form
    28,358.57/42,547.32 = 12,561.45/x
  3. Step 3: Cross multiply
    28,358.57x = 42,547.32 × 12,561.45
  4. Step 4: Simplify right side
    28,358.57x = 534,456,032.81
  5. Step 5: Solve for x
    x = 534,456,032.81/28,358.57
  6. Step 6: Final answer
    x = 18,846.37

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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.