Home / 28,117.47-38,787.05-18,547.89

Finding the Fourth Proportional to 28,117.47, 38,787.05 and 18,547.89

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Solution

The fourth proportional to 28,117.47, 38,787.05 and 18,547.89 is: 25,586.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,117.47 : 38,787.05 = 18,547.89 : x
  2. Step 2: Convert to fraction form
    28,117.47/38,787.05 = 18,547.89/x
  3. Step 3: Cross multiply
    28,117.47x = 38,787.05 × 18,547.89
  4. Step 4: Simplify right side
    28,117.47x = 719,417,844.09
  5. Step 5: Solve for x
    x = 719,417,844.09/28,117.47
  6. Step 6: Final answer
    x = 25,586.15

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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.