Home / 28,547.08-39,412.18-18,628.36

Finding the Fourth Proportional to 28,547.08, 39,412.18 and 18,628.36

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Solution

The fourth proportional to 28,547.08, 39,412.18 and 18,628.36 is: 25,718.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,547.08 : 39,412.18 = 18,628.36 : x
  2. Step 2: Convert to fraction form
    28,547.08/39,412.18 = 18,628.36/x
  3. Step 3: Cross multiply
    28,547.08x = 39,412.18 × 18,628.36
  4. Step 4: Simplify right side
    28,547.08x = 734,184,277.42
  5. Step 5: Solve for x
    x = 734,184,277.42/28,547.08
  6. Step 6: Final answer
    x = 25,718.37

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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.