Home / 15,510.93-21,417.53-10,787.01

Finding the Fourth Proportional to 15,510.93, 21,417.53 and 10,787.01

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Solution

The fourth proportional to 15,510.93, 21,417.53 and 10,787.01 is: 14,894.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,510.93 : 21,417.53 = 10,787.01 : x
  2. Step 2: Convert to fraction form
    15,510.93/21,417.53 = 10,787.01/x
  3. Step 3: Cross multiply
    15,510.93x = 21,417.53 × 10,787.01
  4. Step 4: Simplify right side
    15,510.93x = 231,031,056.35
  5. Step 5: Solve for x
    x = 231,031,056.35/15,510.93
  6. Step 6: Final answer
    x = 14,894.73

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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.