Home / 15,379.01-21,225.75-14,677.81

Finding the Fourth Proportional to 15,379.01, 21,225.75 and 14,677.81

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Solution

The fourth proportional to 15,379.01, 21,225.75 and 14,677.81 is: 20,257.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,379.01 : 21,225.75 = 14,677.81 : x
  2. Step 2: Convert to fraction form
    15,379.01/21,225.75 = 14,677.81/x
  3. Step 3: Cross multiply
    15,379.01x = 21,225.75 × 14,677.81
  4. Step 4: Simplify right side
    15,379.01x = 311,547,417.50
  5. Step 5: Solve for x
    x = 311,547,417.50/15,379.01
  6. Step 6: Final answer
    x = 20,257.96

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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.