Home / 15,386,479.12-21,122,152.67-13,207,238.92

Finding the Fourth Proportional to 15,386,479.12, 21,122,152.67 and 13,207,238.92

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Solution

The fourth proportional to 15,386,479.12, 21,122,152.67 and 13,207,238.92 is: 18,130,549.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,386,479.12 : 21,122,152.67 = 13,207,238.92 : x
  2. Step 2: Convert to fraction form
    15,386,479.12/21,122,152.67 = 13,207,238.92/x
  3. Step 3: Cross multiply
    15,386,479.12x = 21,122,152.67 × 13,207,238.92
  4. Step 4: Simplify right side
    15,386,479.12x = 278,965,316,817,405.94
  5. Step 5: Solve for x
    x = 278,965,316,817,405.94/15,386,479.12
  6. Step 6: Final answer
    x = 18,130,549.21

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.