Finding the Fourth Proportional to 28,868,813.19, 39,838,630.23 and 15,637,737.57
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Solution
The fourth proportional to 28,868,813.19, 39,838,630.23 and 15,637,737.57 is: 21,579,898.02
Step by Step Solution
- Step 1: Write the proportion equation
28,868,813.19 : 39,838,630.23 = 15,637,737.57 : x - Step 2: Convert to fraction form
28,868,813.19/39,838,630.23 = 15,637,737.57/x - Step 3: Cross multiply
28,868,813.19x = 39,838,630.23 × 15,637,737.57 - Step 4: Simplify right side
28,868,813.19x = 622,986,044,685,008.75 - Step 5: Solve for x
x = 622,986,044,685,008.75/28,868,813.19 - Step 6: Final answer
x = 21,579,898.02
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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.