Home / 28,355.67-39,123.61-18,926.06

Finding the Fourth Proportional to 28,355.67, 39,123.61 and 18,926.06

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Solution

The fourth proportional to 28,355.67, 39,123.61 and 18,926.06 is: 26,113.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,355.67 : 39,123.61 = 18,926.06 : x
  2. Step 2: Convert to fraction form
    28,355.67/39,123.61 = 18,926.06/x
  3. Step 3: Cross multiply
    28,355.67x = 39,123.61 × 18,926.06
  4. Step 4: Simplify right side
    28,355.67x = 740,455,547.34
  5. Step 5: Solve for x
    x = 740,455,547.34/28,355.67
  6. Step 6: Final answer
    x = 26,113.14

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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.