Home / 28,139.84-38,802.06-18,064.47

Finding the Fourth Proportional to 28,139.84, 38,802.06 and 18,064.47

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Solution

The fourth proportional to 28,139.84, 38,802.06 and 18,064.47 is: 24,909.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,139.84 : 38,802.06 = 18,064.47 : x
  2. Step 2: Convert to fraction form
    28,139.84/38,802.06 = 18,064.47/x
  3. Step 3: Cross multiply
    28,139.84x = 38,802.06 × 18,064.47
  4. Step 4: Simplify right side
    28,139.84x = 700,938,648.81
  5. Step 5: Solve for x
    x = 700,938,648.81/28,139.84
  6. Step 6: Final answer
    x = 24,909.12

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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.